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Crank:104 BCD ultralight mountain bike crank, only can be used on Single speed chainring.
Crank Arm Length: 170mm, Crank weight: 550g, Crank related holes distance: 74mm.
Chainring:Snail single speed narrow wide teeth chainring, 104BCD, 32/34/36/38T.
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Aluminiun Alloy Chain Covers and Cranks: Sufficient strength and lightweight to reduce the weight of the entire bicycle. The weight of the Crankset and arm is 0.95kg/2.09LB
42T Chainring: Steel material, high strength and durable.
Square Taper Crank Arm:Cranks are made from sturdy forged 6061 aluminum alloy for superior rigidity, high strength and super low weight. Weighs in at only 541g, no any excess weight holding you back
Hard-wearing Chainring:Featuring irregular teeth and chain pick-up pins for smooth and fast shifts. High strength steel and CNC aluminium to ensure longevity
Durability:These crank sets are made from strength material, ensuring they are long-lasting, lightweight and handle the abusive ways of the trail. Suit for mtb, hybrids / touring bikes
【SIZE】 Crank Arm length: 170mm, chainring(3/32" 52T), Compatible with 9/16 inch pedals, chain size 1/2"*1/8", chain line 45mm, B.B.Axle recommended 117.5mm. External width between chain guard is 20mm (0.79in), total diameter of chain guard is 226mm (8.9in).
【MATERIAL】This crank arm set is made of forged aluminum alloy 6061-T6 and steel chainring, which is of high strength and durable, weight is approx 625g/1.38lb.
【COMPATIBILITY】Easy Installation,A good replacement for bike repair, compatible with city folding bike. Check Frame chain stay clearance before purchase.