Packs/Racks/Baskets

- Replacement stabilizers set for Bike Travel Bag Pro

The EVOC COMMUTER waterproof backpack is a city pack that can also be used as an office bag. - 100% PVC free and weatherproof - Attachment system for back light - Organisational compartments - Notebook pocket up to 17-inch with integrated iPad pocket - Abrasion-resistant base - Water resistant zippers

The EVOC CP 18l camera backpack for sporting activities affected to ambitious enthusiastic photographers. The pack offers space for a camera as well as for personal gear. - Attachment system for: Ice axe, poles, tripod, ice axe - Compartment management: camera compartment 60%, equipment compartment 40% - Padded individual partitioning - Back-access camera compartment - Quick side access to camera - Front-access equipment compartment - Hydration compartment on the side, fits 2L bladder - Extra-wide, padded hip belt with hip pockets - Ergonomic, adjustable carrying system - Notebook pocket

The EVOC CP 26l is a sporty camera backpack with complete equipment for professional and amateur photographers who don't want to worry about protecting their camera equipment in outdoor use. - Separate compartments for your photo equipment and for your other gear - Wide opening front and back access to the main compartment - Quick side access - Avalanche compartment with emergency plan - Attachment system for: snowboard, skis (diagonal/vertical), snowshoes, 2 ice picks, poles, tripod (front/side) - Camera compartment partitioning (individual, padded) - Side compartment (fits 2L hydration system, not included) - Compartments for CF and SD cards - Notebook pocket 17” (padded) - Hip belt w/ pocket (extra-wide, padded, removable, adjustable from 90 - 130 cm) - Back section with ventilation channels (reinforced, padded) - Base with rubber feet (reinforced) - T-zipper pullers - Rain cover (integrated, removable)

The EVOC CP 35L is a fully equipped camera backpack for professional sports photographers and videographers. Our pack enables perfect camera protection of sensitive equipment during shoots, even in difficult terrain. - Wide opening back access to the main compartment allows for easy access to your equipment - Avalanche compartment on the front offers storage for a shovel and probe - Attachment system for: snowboard, skis (diagonal/vertical), snowshoes, 2 ice picks, poles, tripod (front/side) - Camera compartment partitioning (individual, padded) - Organizational compartments for CF and SD cards - Notebook pocket 17’’ - Side compartments (left side fits 3L hydration system, not included) - Hip belt w/ pocket (extra-wide, padded, removable, adjustable from 90 - 130 cm) - Back section with ventilation channels (reinforced, padded) - Carrying handle - Base with rubber feet (reinforced) - T-zipper pullers - Rain cover (integrated, removable)

The EVOC DUFFLE BAG water-resistant expedition and travel bag provides plenty of storage space and various carrying options. - Made of 100% PVC-free tarpaulin and boasts plenty of storage space and padded removable carrying straps. - Outside pocket (water-resistant zipper) - Removable carrying straps - Bag can be used as a backpack - Lockable zipper

The EVOC EXPLORER PRO is a versatile bike touring backpack for unlimited bike adventures. With enough room for storage and dialed compartment management, everything you'd need on tour has its space, exactly where you need it. The AIR FLOW CONTACT SYSTEM of the bike backpack offers an outstanding carrying comfort through maximum back ventilation and absolute load neutrality. - Neutral load transmission “Body Hugging” - Extra wide Hip wings with large zipper compartments - Roll-Bottom for internal separation or volume adjustment - Includes separate Wash Pouch

The EVOC EXPLORER PRO is a versatile bike touring backpack for unlimited bike adventures. With enough room for storage and a dialed compartment management everything you'd need on tour has its space, exactly where you need it. The AIR FLOW CONTACT SYSTEM of the bike backpack offers an outstanding carrying comfort through maximum back ventilation and absolute load neutrality. - Neutral load transmission “Body Hugging” - Extra wide Hip wings with large zipper compartments - Roll-Bottom for internal separation or volume adjustment - Includes separate Wash Pouch

The EVOC EXPLORER PRO is a versatile bike touring backpack for unlimited bike adventures. With enough room for storage and a dialed compartment management system, everything you need on tour has its space.. The AIR FLOW CONTACT SYSTEM of the backpack offers outstanding carrying comfort through maximum back ventilation and absolute load neutrality. - Neutral load transmission “Body Hugging” - Extra wide Hip wings with large zipper compartments - Roll-Bottom for internal separation or volume adjustment - Includes separate Wash Pouch

Our BLACKLINE series represents the perfect blend of innovative, ventilated backpacks and the certified technology standard of our PROTECTOR BACKPACKS. Optimized for enduro use, the EVOC FR ENDURO BLACKLINE is the pack of choice for demanding bike tours and trails. - Maximum safety and superior comfort - Completely ventilated carrying system - Attachment system for: helmet (XC, full face), protection gear (stowable) - Tool compartment (separate, wide swing-open) - Hip belt pocket - Accommodates hydration systems up to 3L (not included)

Designed in collaboration with our team riders, the FR ENDURO TEAM stands out from the other FR ENDURO models thanks to its stronger branding. Additionally, this model features a hip belt pocket. - Back protector is removable and replaceable - Attachment system for: helmet (XC, full face), protection gear (stowable) - Tool compartment (separate, wide swing-open) - Accommodates hydration systems up to 3L (not included)

The EVOC FR ENDURO WOMEN combines a 16-liter capacity backpack with an integrated back protector. The perfect blend for enduro races or tours. The pack has been specially designed for females which makes it the perfect backpack for girls and women on a bike. - Back protector is removable and replaceable - Attachment system for: helmet (XC, full face), protection gear (stowable) - Tool compartment (separate, wide swing-open) - Accommodates hydration systems up to 3L (not included) - Volume: 16L

The EVOC FR ENDURO backpack combines 16 liters of capacity with an integrated back protector. This makes the pack the perfect blend for enduro races and bike tours. - Back protector is removable and replaceable - Attachment system for: helmet (XC, full face), protection gear (stowable) - Tool compartment (separate, wide swing-open) - Accommodates hydration systems up to 3L (not included)

The EVOC FR TRACK offers back protection for XS riders. Fully equipped protector backpack with spine protection for riders with shorter backs. - LITESHIELD BACK PROTECTOR offers 95% shock absorption - Attachment system for: helmet (XC, full face) - Accommodates hydration systems up to 2L - FREE PROTECTOR CRASH REPLACEMENT

The EVOC FR TRAIL comes as a daypack with integrated back protector. 20L of capacity and an ergonomic fit make the backpack an absolutely reliable partner on a bike tour. - Superior carrying comfort and neutrally balanced load distribution - Back protector is removable and replaceable - 2-Step-Zip System - Attachment system for: helmet (XC, full face), protection gear (stowable) - Tool compartment (separate, wide swing-open) - Rain cover (integrated) - Accommodates hydration systems up to 3L (not included)

EVOC BLACKLINE backpacks represent the perfect blend of innovative ventilation and the successful technology standard of their PROTECTOR BACKPACKS. The EVOC FR TRAIL BLACKLINE is a high-end day pack with a back protector that offers optimal support during longer bike tours and trail rides. - Integrated back protector: backpack also serves as personal safety equipment (PSE) - Body-hugging fit - Completely ventilated carrying system with breathable hip belt - Back protector is removable and replaceable - 2-Step-Zip System - Attachment system for: helmet (XC, full face), protection gear (stowable) - Tool compartment (separate, wide swing-open) - Rain cover (integrated) - Accommodates hydration systems up to 3L (not included)

The EVOC FR TRAIL WOMEN comes as daypack with integrated back protector. 20 liters of capacity and a fit that has been specially designed to adapt to the female anatomy make it an absolutely reliable partner on a bike tour. This makes it the perfect backpack for girls and women. - Back protector is removable and replaceable - 2-Step-Zip System - Attachment system for: helmet (XC, full face), protection gear (stowable) - Tool compartment (separate, wide swing-open) - Rain cover (integrated) - Accommodates hydration systems up to 3L (not included)

The EVOC FR TRAIL UNLIMITED comes as a daypack with integrated back protector. 20 liters of capacity and an ergonomic fit make the backpack an absolutely reliable partner on a bike tour. - Superior carrying comfort and neutrally balanced load distribution - Back protector is removable and replaceable - 2-Step-Zip System - Attachment system for: helmet (XC, full face), protection gear (stowable) - Tool compartment (separate, wide swing-open) - Rain cover (integrated) - Accommodates hydration systems up to 3L (not included)

The EVOC FRAME PAD protects the bike frame from scratches and other transport damage. - Fits most bike frames - Attachment for handlebar - Velcro straps attachment

- AIRFLOW CONTACT SYSTEM offers perfect back ventilation - VENTIFLAP for uphill- and downhill mode adjustment - 2 BOTTLE CARRIERS with extra safety fixation - easy to reach - Includes 1.5L bladder and magnetic tube clip

- AIR PAD SYSTEM offers great carrying comfort - 1L main compartment - 2 HIP BELT POUCHES for smaller items - 2 NUTRITION COMPARTMENTS, easy to reach

The EVOC JOYRIDE 4L is a lightweight performance kids backpack for bike, with outstanding carrying comfort and the same functional features as the adult models. - External mesh compartment - Removable waist belt - Accommodates hydration systems up to 2L (not included) - Lightweight: only 360 grams

The EVOC MESSENGER BAG is a shoulder bag with elaborate pocket management for comfortable transporting of work documents and laptop. - Attachment system for back light - Padded notebook sleeve - Water resistant necessity pocket - Adjustable shoulder strap - Removable shoulder strap padding - Attachment system for telescopic handles

Hands-on top load backpack for your daily business. - Top load to main compartment - Padded notebook compartment - Organizer compartment

Sophisticated multi-feature travel backpack for digital nomads. - AIR PAD SYSTEM offers perfect back ventilation - Quick back access to notebook and tablet pocket - Magnetic quick-snap fastener

- Padded protective and water-resistant phone case - Easy attachment to a backpack's shoulder straps - Size: L = 15.5 x 7,5 x 1,8cm; XL = 16 x 8 x 2cm - L fits iPhone 8, Samsung Galaxy S8/S9, etc. - XL fits iPhone X, iPhone 8+, Samsung Galaxy S8+/S9+/Note 8, etc.

The EVOC SADDLE BAG RACE has been reduced to the essentials, but still offers enough space for tools under your bike seat. This makes it ideal for marathon races and other races. - Weighs only 45g - Pocket (Mesh) - Better visibility thanks to reflective logo print - Fixation via snap buckle - Size: 12 x 4,5 x 6 cm/4.7''x1.8''x2.4'' - Volume: 0.3L/18 cubic inches

With the EVOC STAGE 12L you get a compact technical daypack with excellent features. It's the number one pack for those looking to ride their bike with little equipment but uncompromising carrying comfort. Extra convenience comes with the freely moving BRACE LINK that allows the shoulder straps to adapt to the individual shoulder width of the wearer. - Emergency plan (integrated) - Attachment system for: helmet (XC, full face), protection gear (stowable) - Tool compartment (separate, quick-access) - Rain cover (integrated) - Accommodates hydration systems up to 3L (not included) - Volume: 12L

With the EVOC STAGE 12L you get a compact technical daypack with excellent features. It's the number one pack for those looking to ride their bike with little equipment but uncompromising carrying comfort. Extra convenience comes with the freely moving BRACE LINK that allows the shoulder straps to adapt to the individual shoulder width of the wearer. - Emergency plan (integrated) - Attachment system for: helmet (XC, full face), protection gear (stowable) - Tool compartment (separate, quick-access) - Rain cover (integrated) - Accommodates hydration systems up to 3L (not included) - Volume: 12L

The EVOC STAGE 18L is a multi-faceted, technical daypack. The series is characterized by the BRACE LINK carrying system, which adapts to the wearer's individual shoulder width. The best backpack for all those looking for ultimate carrying comfort and uncompromising back ventilation when riding their bike. - Emergency plan (integrated) - Attachment system for: helmet (XC, full face), protection gear (stowable) - Tool compartment (separate, quick-access) - Rain cover (integrated) - Accommodates hydration systems up to 3L (not included) - Volume = 18L

With the EVOC STAGE 12L you get a compact technical daypack with excellent features. It's the number one pack for those looking to ride their bike with little equipment but uncompromising carrying comfort. Extra convenience comes with the freely moving BRACE LINK that allows the shoulder straps to adapt to the individual shoulder width of the wearer. - Emergency plan (integrated) - Attachment system for: helmet (XC, full face), protection gear (stowable) - Tool compartment (separate, quick-access) - Rain cover (integrated) - Accommodates hydration systems up to 3L (not included) - Volume : 12L

Sporty city backpack for everyday use. - Well padded notebook pocket - Organizer compartments - Easy to reach side pockets

Compact, lightweight trolley with attached backpack for short travels. - Detachable daypack - Smooth running & replaceable skate wheels - Cabin luggage dimensions for air travel (excluding daypack) - Weight: 3.2kg (20% lighter than previous generation) - Volume 40L + 20L

Carry-on luggage trolley for weekend trips. - Telescopic handle - Cabin luggage dimensions for air travel - Smooth running & replaceable skate wheels - Lightweight: only 2.8kg

Sturdy high volume trolley for well-organized travelling. - 80/20 Compartment management - Telescopic handle - Smooth running & replaceable skate wheels - Weight: 4.2kg (20% lighter than previous generation)

Each bag holds one wheel (up to 700c with 35mm cyclocross tire) for transport. It also connects to a second Zipp Connect wheel bag (sold separately) to form a double wheel bag. - Sturdy, water-resistant EVA construction with distinctive molded Zipp graphics. - Integrated carry handle and detachable shoulder strap. - Removable internal pocket for storing quick-release skewers and axle end caps. - Padding holds wheel in place.

Zipp's Speed Box 1.0 is designed to mount securely to a bike's top tube to hold nutrition and small items conveniently within reach. Featuring solid-molded EVA construction, water-resistant zippers, and 3-point Velcro attachments, the Speed Box 1.0 is a lightweight, easy-to-use alternative to traditional saddle bags.

Zipp's Speed Box 2.0 is designed to mount securely to a bike's top tube to hold nutrition and small items conveniently within reach. Featuring solid-molded EVA construction, water-resistant zippers, and 3-point Velcro attachments, the Speed Box 2.0 is a lightweight, easy-to-use alternative to traditional saddle bags.

Zipp's Speed Box 3.0 is designed to mount securely to a bike's top tube to hold nutrition and small items conveniently within reach. Featuring solid-molded EVA construction, water-resistant zippers, and 3-point Velcro attachment, the Speed Box 3.0 is a lightweight, easy-to-use alternative to traditional saddle bags.

When race day arrives, the last thing you want to worry about is organization. The Zipp Transition 1 Gear Bag has multiple compartments to keep your essentials easy to find and converts quickly from backpack to duffel with a removable shoulder strap. A top molded pocket protects valuable items like cell phones and sunglasses, while a large ventilated lower compartment keeps shoes or wet clothes separated from the main hold. Camera bag-style dividers, an adjustable helmet pocket, and water-resistant fabric further extend the Transition 1's versatility, providing race-day relief from basic, cluttered alternatives. - Center compartment includes camera bag-style dividers to keep items organized. - Large ventilated lower compartment for shoes or wet clothing. - Adjustable helmet pocket. - EVA top pocket. - Side net for water bottles. - Reflective tabs. - Total volume of 56 liters

XLAB has designed the first aerodynamic repair storage bag for single rear systems with their Aero Pouch 300. It sports a compact, sleek design while carrying a great deal of essential repair tools. • Fits around the bottle cage on all metal XLAB single rear systems • Simple install by using the 2 bottle cage holes • Actually helps the drag behind you by collecting the air into a smooth airflow • Velcro zipper pull stays down to avoid zipper flapping drag Includes: • AERO POUCH 300 bag • All required hardware for mounting onto metal DELTA systems • Installation Instructions Material: • Tough woven nylon • Rigid insert to maintain shape • Weight: 107 grams Fits all metal XLAB single rear systems • DELTA 300 • DELTA 400 • DELTA 425 • DELTA SONIC • DELTA SONIC XL

Convenient, state-of-the-art storage case with a stealth carbon-look finish fits securely in cages. Rattle-proof padding for a noiseless ride. Ideal for road-side repair tools. - Capacity: 25.8 cubic inches (423 cubic cm) - Height: 5.25 in (133.5 mm) - Weight: 65g

• Complete packaged system containing all essential items for training and Olympic race distances • Includes essentials needed to do an Olympic distance triathlon • Includes the key items you need for longer training rides • Supplies your hydration, nutrition, and repair storage needs along with inflation accessories Includes: • TORPEDO SYSTEM 50: Refillable 26 oz aerobar mounted hydration system. No tools required for installation. • STEALTH POCKET 400: Large capacity nutrition top tube storage bag accommodating most bikes. Features reinforced sides to maintain aerodynamic shape. • DELTA 100 SYSTEM: Single bottle, saddle-mounted hydration system featuring a 5 lb grip force cage. Fits most standard saddle rails. • MULTI-STRIKE REPAIR HOLDER: Streamlined repair storage holder mounting to the DELTA 100 system. Holds clincher or tubular tire repair kits. • NANOFLATOR: Easy to use inflator, with a twist to inflate function, for controlled inflation. • AIR STRIKE CO2 cartridge: Two 16 gram CO2 cartridges.

Xlab's Mezzo Bag is the perfect seat bag for carrying and protecting your spare tubular tire (or 2 tubes), your inflator, and other essential repair items. The bag features a large main compartment and a zip pocket on the outside for easy access. It's made from tough woven nylon. It's easy to install with the hook-and-loop and buckled straps, and it works with both standard and aero seatposts.

Xlab's Mini Bag is a small seat bag perfect for carrying the essentials. Can fit a tube, tire levers, inflator, patch kit, and two 16-gram CO2 cartridges. Small enough to tuck under your saddle or inside your Super Wing or Carbon Wing rear carrier. It's made from tough Cordura, is easily attached with the hook-and-loop straps, and it works with round and aero seatposts.

Square top-tube boxes are not aero, so step in the Rocket Pocket! The streamlined design of the Rocket Pocket eliminates stem drag. The non-slip surface underneath provides sturdy nutrition storage. An easy-slide rubber zipper pull allows for a quick, easy open and close to keep your focus on the road. Silver interior lets you find your nutrition or salt tablets quickly. It can fit the longest energy bars

Square top-tube boxes are not aero, so step in the Rocket Pocket! The streamlined design of the Rocket Pocket XL eliminates stem drag. The non-slip surface underneath provides sturdy nutrition storage. An easy-slide rubber zipper pull allows for a quick, easy open and close to keep your focus on the road. The silver interior lets you find your nutrition or salt tablets quickly. It can fit the longest energy bars.

• Complete packaged system containing all essential items for training and Sprint race distances • Includes the key items for training • Includes essentials you need for short triathlons • Supplies your hydration, nutrition, and repair storage needs along with inflation accessories Includes: • TORPEDO SYSTEM 50: Refillable 26 oz aerobar mounted hydration system. No tools required for installation. • STEALTH POCKET 100: All-purpose nutrition & repair top tube storage bag accommodating most bikes • NANOFLATOR: Easy to use inflator, with a twist to inflate function, for controlled inflation • AIR STRIKE CO2 cartridge: One 16 gram CO2 cartridge

The Stealth Pocket 100 is the first in a line of next-generation top-tube bags. It has a 72-degree front that fits tight up against the stem and features an inside mesh pocket for electrolyte/salt tablets. The bag reduces drag caused by the stem and headset spacers (note: measure stem height to height of bag). The silver-colored interior makes it easy to see what’s inside quickly so you can turn your focus back to the road ahead. With a non-slip surface underneath and extra-long front straps, you won’t have trouble attaching it even if you have cables entering your frame behind the headset. And, you’ll be sure that the Stealth Pocket 100 will stay in place so you can get to your nutrition quickly and easily.

Ultra durable outer showcases a ‘carbon-look’, stylish matte finish. Modern material deflects the elements maintaining high resistance to wear, perspiration and electrolyte drinks. The silver-colored interior makes it easy to see what’s inside quickly so you can turn your focus back to the road ahead. Mounts to top tube via stem/top tube straps. - Capacity: 20.4 in3 (334 cm3) - Weight: 2.3 oz (66g)

The Stealth Pocket 200 mounts directly to your top tube on the bolt bosses found on some bike models. It has a 72 degree front that fits tight up against the stem to eliminate turbulent air pockets. The bag reduces drag caused by the stem and headset spacers (note: measure stem height to height of bag). The silver-colored interior makes it easy to see what’s inside quickly so you can turn your focus back to the road ahead. It features a specially designed insert to maintain the aero form of the bag to help you go that much faster!

No more fumbling for salt, electrolyte or Ibuprofen tablets. Stealth Pocket XP debuts four outside pockets for easy access to the small vitals that make the big difference. The silver-colored interior makes it easy to see what’s inside quickly so you can turn your focus back to the road ahead. - Capacity: 20.4 in3 (334 cm3) - Weight: 2.3 oz (67g)

The Stealth Pocket 300 mounts directly to your top tube on the bolt bosses found on some bike models. It has a 72-degree front that fits tight up against the stem to eliminate turbulent air pockets. The bag reduces drag caused by the stem and headset spacers (note: measure stem height to height of bag). The silver-colored interior makes it easy to see what’s inside quickly so you can turn your focus back to the road ahead. It features a specially designed insert to maintain the aero form of the bag to help you go that much faster!

Do you have an integrated stem or have cables entering your top tube? Do you find that no bag will fit your bike? Introducing Xlab's Stealth Pocket 400. With 3 strong Velcro straps, the bag will mount anywhere on your top tube! Aerodynamically designed with a perfect 5:1 ratio which means no aero disadvantage. Testing has found without a Stealth Pocket 400, you lose up to 2 minutes in a race. Features a specially designed insert to maintain the aero form of the bag as you stuff it with your vital nutrition! Non-slip grip underneath bag ensures the bag stays put for up-front, easy access. Easy slide, dual rubber zipper pull allows you to get your nutrition however it is more comfortable for you. Silver-colored interior makes it easy to see what’s inside quickly so you can turn your focus back to the road ahead. Can carry up to 6 gels.

Ultra durable outer showcases a ‘carbon-look’, stylish matte finish. Modern material deflects the elements maintaining high resistance to wear, perspiration and electrolyte drinks. The silver-colored interior makes it easy to see what’s inside quickly so you can turn your focus back to the road ahead. Mounts to top tube with Velcro straps. - Capacity: 23.2 in3 (380 cm3) - Weight: 2.7 oz (76g)

No more fumbling for salt, electrolyte or Ibuprofen tablets. Stealth Pocket XP debuts four outside pockets for easy access to the small vitals that make the big difference. The silver-colored interior makes it easy to see what’s inside quickly so you can turn your focus back to the road ahead. Mounts to top tube with Velcro straps. - Capacity: 23.2 in3 (380 cm3) - Weight: 2.7oz (76g)

Do you have an integrated stem or have cables entering your top tube? Do you have top tube bolt bosses? Introducing Xlab's Stealth Pocket 500. Aerodynamically designed with a perfect 5:1 ratio which means no aero disadvantage. Testing has found without a Stealth Pocket 500, you lose up to 2 minutes in a race. Features a specially designed insert to maintain the aero form of the bag as you stuff it with your vital nutrition! Non-slip grip underneath bag ensures the bag stays put for up-front, easy access. Easy-slide, dual rubber zipper pull allows you to get your nutrition however it is more comfortable for you. Silver-colored interior makes it easy to see what’s inside quickly so you can turn your focus back to the road ahead. Can carry up to 6 gels.

Ultra durable outer showcases a ‘carbon-look’, stylish matte finish. Modern material deflects the elements maintaining high resistance to wear, perspiration and electrolyte drinks. The silver-colored interior makes it easy to see what’s inside quickly so you can turn your focus back to the road ahead. Mounts to top tube bosses. - Capacity: 23.2 in3 (380 cm3) - Weight: 2.7oz (76g)

BarBag is designed to let you take your adventure farther.  Providing easy to access on-the-bike storage, it allows for one handed opening and closing on the go. Its Magnetic MagCro latch keeps things closed no matter the riding conditions and its design does not interfere with standing and pedaling. - Secure and easily accessible on the bike nutrition/phone/wallet/tool storage - Clear lid with automatic MagCro(TM) latch allows riders to easily access contents even in the roughest of conditions - Exact shaping to fit on the side of the stem while allowing standing pedaling without knee interference - Dimensions (trapezoidal shape):16cm x 7 cm x 5 cm and 7 cm deep (0.6 liter capacity) - GPS/Bike Computer bumper provided for spacing the bag away from the stem

While the classic seat pack is a great place to store little-used essentials out of the elements, their mounting systems can interfere with and often damage modern dropper seatposts. Valais allows the use of a traditional seatbag on a dropper seatpost. - Allows the usage of seat packs on a dropper post - Protects the dropper stanchion from wear and grit - Can act as a travel limiter when full drop isn't needed - Sized by stanchion diameter