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Soma Riff 27.5 Frame

Soma Riff 27.5 Frame
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Details

The Riff is our hardtail frame for 27.5"/650b wheels. Geometry is ideal for single-track, flowy trails, and bikepacking. Tough IRD Broski Sliding Dropouts allow you to go single-speed or geared or even run hub gears. While the industry is telling everyone to get "Boost", the Riff lets you run an OLD 142mm thru-axle (or even 135mm QR with a different insert). Another retro feature: you can use a front derailleur if you want.

Its most unusual option: The Riff is offered in a belt-drive-ready version.

- Tange Prestige heat-treated butted CrMo main tubes
- 12x142mm thru-axle (thru-axle included)
- 44mm head tube for tapered steerer tubes (tapered steerer forks will require an EC44 lower headset cup, straight steerer forks can use a ZS44 lower cup)
- Accommodates a 100/120mm travel fork (69-degree head angle with 100mm fork, 68-degree head angle with 120mm fork)
- Fits up to 27.5 x 2.8" tires
- International Standard disc brake mounts
- Use 34.9 seat clamp and 400mm post recommended
- Pelham Blue to match classic Gibson Les Paul guitars
- 4.5 lbs (14.5")

Sizes:
SizeX-SmallSmallMediumLarge
Seat Tube (mm) 380 410 440 470
Top Tube, Effective (mm) 563 / 560 589 / 585 614 / 610 644 / 640
Head Tube Angle 66.8° / 68° 66.8° / 68° 66.8° / 68° 66.8° / 68°
Seat Tube Angle 72.4° / 73.5° 71.8° / 73° 71.8° / 73° 71.9° / 73°
Chainstay Length (mm) 427 427 427 427
Headtube Length (mm) 100 110 115 120
Bottom Bracket Drop (mm) 36 / 44 36 / 44 36 / 44 36 / 44
Standover Height (in) 760 780 796 814
Front Center (mm) 653 674 699 729
Wheelbase (mm) 1076 1097 1122 1152
Frame Stack (mm) 587 / 579 597 / 589 602 / 593 607 / 598
Frame Reach (mm) 373 / 386 390 / 403 414 / 426 442 / 454
Fork Unsagged / Sagged (mm) 509 / 484 509 / 484 509 / 484 509 / 484

Specs

Frame Tange Prestige heat-treated butted CrMo steel; butted CrMo rear end
Fork Sold Separately
Pedals Sold Separately

* Subject to change without notice.

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