This Race quality heavy duty double row performance endless timing chain is the best chain available and used by top engine builders, also will fit MGB and Midget cars. This chain is for duplex gears that is used bymany people who race as a limited stretch heavy duty version made to stringent quality control to exact dimensions for perfect engine timing. This high-quality set provides improved durability and strength, ensuring optimal performance on the road. The lightened cast design reduces weight while increasing efficiency, allowing for a smoother ride and better acceleration. Made from top-quality materials, this duplex chain is built to withstand even the toughest conditions. Upgrade your Classic car's performance and reliability with this Double row timing chain