SPECIFICATIONS

Brand Name: PowerMotor

Choice: yes

High-concerned chemical: None

Model Name: CR109

Origin: Mainland China

Product Introduction

This automatic chain tensioner is an essential maintenance & modification part for chain-driven motorcycles and ATVs. Long-term use causes chain elongation and slack, resulting in chain jumping, sprocket abrasion, impact noise and even chain dropping during off-road bumpy riding. The tensioner uses spring preload to automatically maintain proper chain tightness; the wear-resistant nylon guide roller guides chain operation steadily, limiting lateral shaking. It prolongs service life of chain and sprocket set, stabilizes power transmission, and improves driving smoothness for street, trail and motocross use.

Material & Spec

Roller: Wear-resistant nylon wheel + built-in high-speed bearing

Bracket: Thick painted steel anti-rust bracket

Matching Parts: Tension spring, mounting bushing, bolt & lock nut hardware set

Function: Automatic chain tension adjustment, chain anti-drop guiding, chain & sprocket wear reduction, noise elimination

Core Selling Points

Multi-Chain Size Compatibility: Works with mainstream 420/428/530 motorcycle drive chains for wide vehicle adaptability.
Automatic Tension Correction: Eliminates frequent manual adjustment, prevents chain slack, skipping and derailment on rough roads.
Low-Friction Wear-Resistant Roller: Bearing-equipped nylon pulley cuts friction loss and extends chain/sprocket lifespan.
Complete All-In-One Kit: All installation hardware included for convenient direct replacement assembly.
Heavy-Duty Rustproof Structure: Sturdy steel bracket resists vibration, mud and outdoor corrosion for long service life.