Ips Vision Frt or RR 170x39 134 SQR JIS crankset black

Tandem specific crankset - allows captain and/or stoker to coast or pedal independently . Forged alloy crankarm and spider . Steel 39t chainring. Does not include BB (square taper). Weight does not include BB. **Only compatible with tandems that have both chains on the right side of the tandem**