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Features shimano 12v fc-rx820-2 48x31t 172.5mm
FC-RX820-2 12-speed 172.5mm 48-31T Crankset. SHIMANO FC-RX820-2 cranks balance weight savings, optimized efficiency and a host of shifting options that meet the segmented demands of mixed-terrain riding.
Dual chainring meets the segmented demands of gravel riding, while maintaining the tighter gear steps needed to maintain your position in the peloton . The 2x12-speed cranks use a 48-31T chainring and crank arm lengths of 170, 172.5 and 175 mm.Features:
- Smaller gear steps for cadence control when riding on mixed terrain.
- Gravel-optimized gear ratios preserve riding pace on rough surfaces.
- Wider gear range.
- 17T range covers different driving conditions.
- Gear combination: 48-31T.
- Rear speed: 12 .
- Recommended Bottom Bracket|Press-Fit SM-BB72.
- Recommended Bottom Bracket Threaded (normal) SM-BBR60
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