The B-Side is our hardtail frame for 27.5"/650b wheels. This 4th generation B-Side is more versatile than ever. Snazzy Tange/IRD Sliding Dropouts allow you to go single-speed or geared. A modified chainstay allows fiting 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
- Disc brakes only (no canti studs)
- Standard or belt-drive versions available
- Tange/IRD Sliding Dropouts allows geared and single-speed builds with easy wheel removal
- S-bend seatstays and chainstays
- Low sloping top tube/short seat tube
- Geometry is optimized for 100mm travel 27.5" forks and will handle 120mm forks great too
- CNC-machined 44mm headtube: Will take 1-1/8" steerers with a ZeroStack 44 headset or tapered steerers with a ZS44 upper assembly and external cup (EC44) lower assembly
- 27.2mm post size/28.6mm frt. der. size/29.8mm(or 30.0) seat collar, 73mm bottom bracket (English threads); 400mm+ post recommended
- Recommended tire size: 27.5 x 1.95 - 2.8”
- Color: Fiery Red
- Wt: 5.1 lbs.
- Sizes: SM(14.5"), MD(16.5"), LG(18.5"), XL(20.5")

Soma B-Side (27.5″ / 650b)

A 27.5″ steel frame crosscountry frameset.

Frame	Steel
Wheels	27.5″

2018 SomaB-Side (27.5″ / 650b)

2018 Soma
B-Side (27.5″ / 650b)