We have this frame in size medium (44cm) and we'd love to build it up for you! We have various fork options as well as components and accessories (used, new, or special order) to build this up exactly to your liking and according to your budget. The marked price is for the frame alone; labor and parts will be an additional cost.
Here are the details from Soma:
The Riff is our hardtail frame for 27.5″/650b wheels. It replaces the B-Side model. While the B-Side showed our tendency of keeping things old school, the Riff is modern without being trendy with the geometry and features. Tough Broski Sliding Dropouts allow you to go single-speed or geared or even run hub gears. Compatible with 12x142mm thru-axle hubs . A modified chainstay allows fitting even some double cranks with “plus size” 2.8″ wide tires without needing to invest in Boost parts. We even offer a belt-drive ready version.
– Tange Prestige heat-treated butted CrMo steel; butted CrMo rear end
– Geometry is optimized for 100mm travel 27.5″ forks and will handle 120mm forks great too
– Disc brakes only (ISO tabs)
– Standard or Belt-Drive compatible versions available (split for installing belt is on the seatstay.)
– IRD Broski Sliding Dropouts allows geared and single-speed builds with easy wheel removal
– S-bend seatstays and chainstays
– Rear rack and fender eyelets
– CNC-machined 44mm headtube: Will fit 1-1/8″ steerers with a ZeroStack 44 headset or fit tapered steerers with a ZS44 upper assembly and external cup (EC44) lower assembly
– 31.6mm post size/34.9mm frt. der. size/34.9mm seat collar(not included), 400mm(or longer) post recommended.
– Dropper post cable routing runs on downtube and inside the seat tube
– 73mm bottom bracket (English threads)
– These come ready for 142 x 12mm Thru-Axle hubs. (Can be converted to 135mm spacing for traditional QR hubs with IRD aftermarket inserts)
– Recommended tire size: 27.5 x 1.95″ – 2.8”
– Color: Pelham Blue
– XS = Wt: 5.4 lbs.
– Sizes: XS(38cm), SM(41cm), MD(44cm), LG(47cm)
