BOLANY 165mm Bike Cranksets 48T/49T Hollow Integrated 144BCD Lightweight Aluminium Alloy Single Speed Round Chainring Fit for Track Bicycle Fixed Gear Bike Crankset with Bottom Bracket Black49T
- Specifications:165mm Crank arm length.144BCD.Hollow Integrated.Comes with BB91 threaded bottom bracket and 2 pads. BB91 BC1.37 * 24T suitable for 68-73mm bottom bracket.Built-in bearing with high lubricity.Smooth pedaling and noise reduction.Compatible with 9/16 inch pedals and standard 1/2"*1/8"chain.Suitable for some Track Bikes,Cruisers,Schwinn,Fixed Gear Bike,Folding Bikes and so on.
- Material:7075 T6 Aluminum Alloy Crank and chainring.Lightweight material,around 880g.It's lighter than other cranks. Reduces the overall weight of the bike.Rugged and durable, Precision tooth shape,smooth shifting.High strength removable chainring,Easy to retrofit.The shaft is made of Chrome Molybdenum Steel,Improve the stability of crank and hollow shaft.
- Compared with the Square Tapered Crankset, the Hollow Integrated crankset is lighter,more lubrication and durable. And there is no noise.Many square tapered cranksets are prone to noise after a while due to their structure. But the hollow integrated crankset does not. This is why we recommend using hollow integrated crankset.
- CNC machining process and surface anodized. Higher strength and more exquisite.No imperfections. Easy to clean.48T and 49T sizes. 49T comes with a high grade hollow chainring.They are indispensab....