BOLANY Bike Cranksets 170mm Hollow Integrated 104BCD Double Speed Round Chainring 22/36T 24/38T MTB Crankset with Bottom Bracket (24/38T)

BOLANY Bike Cranksets 170mm Hollow Integrated 104BCD Double Speed Round Chainring 22/36T 24/38T MTB Crankset with Bottom Bracket (24/38T)

• Specifications:170mm Crank arm.104BCD. Hollow Integrated. Comes with BB91 threaded bottom and crank dust cap. Crank dust cover effectively protects the crank. Wide and narrow tooth Double speed round chainring 22/36T and 24/38T. Compatible with 10 speed / 11 speed. Weight:around 1000g
• Material:7075 T6 Aluminum Alloy Crank. Steel Chainring.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
• Bottom Bracket: BB91 threaded bottom bracket,BB91 BC1.37 * 24T suitable for 68-73mm bottom bracket MTB, Road bike.Built-in bearing with high lubricity.Smooth pedaling and noise reduction.Contains aluminum alloy gasket
• Internal weight reduction design,Make cranks lighter.It is fixed with multiple threads.make the crank force more direct.CNC machining process, And surface heat treatment process forging.Higher strength. Higher strength and more exquisite.No imperfections. Easy to clean
• 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