Features: Specially designed for electric motorcycles, it accurately suitable for rear wheel structure, with installation hole positions and size errors of less than 0.1mm. No additional modifications are required, and the original adjustment components can be directly replaced, ensuring a perfectly fit without looseness. ​ Crafted from aluminum alloy material, with surfaces anodized treatments. Resistant to impact and wear, it is also resistant to bumps and stone impacts on off-road roads and is not easily deformed, doubling its service life. ​ The original knob style adjustment design eliminates the need for complex tools. By rotating the adjustment nut with one hand, the chain can be quickly tightened or loosened. The scale markings are extremely clear, and the tightness of the chain is visible. ​ Builtin double locking structure, automatically locks when adjusted in place, and will not shifts even under high-intensity bumps during off-road driving. Tested to maintain proper tension of the chain under extreme road conditions such as continuous speed bumps and off-road flying slopes. ​ Lightweight design reduces weight by 30% compared to original parts, reduces rear wheel burden, and accelerates more sensitively. Whether it's daily cycling or off-road challenges, the performances of the lightweightcan be maximized. Specifications: Component:Aluminum Alloy Color:Red, Silver, Black, Blue, Yellow, Purple Package Includes: 2Pcs Chain Adjuster note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.