SPECIFICATIONS

Brand Name: ONIRII

Origin: Mainland China

Type: Bicycle Chainwheel

Material: Aluminum Alloy

Category: CRANK

Use: Road Bicycles

Model Number: PR2 Crankset

Brand: SENICX

Model: PR2

Crank surface: Frosted

Material: crank arm 6061, chain ring 7075, core 7075

Axle: DUB 28.99mm

Adjustment: crank core with adjustment ring

Crank Length: 165mm, 170mm, 172.5mm, 175mm

Chainring specification: 46-30T ,50-34T ,52-36T ,53-39T

Weight: 800g for cranks, ±10% for chainrings.

Compatible bottom bracket: BSA-DUB PF30-DUB PF30-DUB BB386-DUB PF41-DUB
Compatible with: all 8s 9s 10s 11s 12s chains
Compatible with: 8/9/10/11/12 speed bikes
Features: high hardness and wear resistance, durable, anti-corrosion and anti-rust

Suitable for: road bikes, folding bikes, fixed gear bikes, track bikes and other bicycles

Pre-purchase Notes:

1, chainwheel support road frame specifications

2、chainwheel warranty is 1 year

3、Chainrings are wear parts and not covered by warranty.

*Selecting No BB means no bottom bracket in your order

The special tooth angle of the chainring allows for a tighter and smoother fit between the chainring and the chain during the ride

Optimized chainring tooth shape and aluminum alloy 7075 cold forging technology increase the chainring's abrasion resistance by up to 50%

The specially shaped teeth play a crucial role in the smoothness of shifting, which helps the chain to be 30% faster in the winding process, resulting in a faster shifting experience

The purpose of the anti-drop chain peg is to prevent the chain from falling outward and then getting stuck in the middle of the crank and chainring, avoiding chain damage due to mechanical problems

PR2 chainwheel as a comprehensive multi-performance in one chainwheel, it has a high cost-effective reputation in the road bike chainwheel, and its wear-resistant, durable and high rigidity performance has been praised by many riders

The micro-adjustment ring on the non-driven side serves to adjust the fine clearance during installation, and rotating the ring allows the sprocket to achieve the smoothest rotation resistance

DUB technology brings more excellent axle and center shaft design than before, unifies the axle specification, and improves the overall durability, toughness, and brings better frame compatibility than before

The crank mounting screws are 7075-M8 with a maximum torque of 54 N.m, there is an additional slot at the bottom of the screws for easier installation

BSA68-DUB  Threaded bottom bracket

Width: 68-73mm
Weight: 83g
Material: aluminum alloyPF41/BB86-DUB  Pressed-in bottom bracket

Width: 86-92mm
Weight: 76g
Material: aluminum alloy
Outer diameter: 41mm
Inner diameter: 24mmBB30-DUB bottom bracket

Width: 68-73mm
Weight: 104g
Material: aluminum alloy
Outer diameter: 44mm
Inner diameter: 29mmPF30-DUB bottom bracket

Width: 68-73mm
Weight: 110g
Material: aluminum alloy
Outer diameter: 44mm
Inner diameter: 29mmBB386-DUB   bottom bracket

Width: 86-92mm
Weight: 106g
Material: aluminum alloy
Outer diameter: 44mm
Inner diameter: 29mm