Blue Line GY6 Valve Keeper Set 4-Piece 125cc 150cc

Refresh your valvetrain with the Blue Line GY6 Valve Keeper Set . These precision-hardened valve cotters (also known as keepers or collets) lock the valve spring retainer to the valve stem — a critical component that prevents valve drops and catastrophic engine failure during high-RPM operation. This 4-piece set fully services both intake and exhaust valves on a standard 2-valve GY6 cylinder head. Key Features Precision Hardened Steel: High-tensile alloy steel resists wear and prevents mushrooming under constant spring pressure Exact Taper Fit: Factory-correct taper angle ensures a perfect mechanical lock between valve stem and spring retainer Complete Set: 4 keepers (2 pairs) — enough to fully service both intake and exhaust valves on a 2-valve GY6 head OEM-Equivalent: Reliable replacement for stock parts on 125cc, 150cc, and 161cc GY6 engines Specifications Quantity: 4 keepers (2 pairs) Material: Hardened alloy steel Application: Intake & exhaust valve stems, 2-valve cylinder heads Distributor SKUs: Parts for Scooters 151-111 / 164-172 Compatibility Engine Code Common Vehicle Brands 157QMJ / 1P57QMJ TaoTao, Wolf, Icebear, Peace Sports, Bintelli 152QMI / 1P52QMI Znen, Jonway, Roketa, and Kymco clones 161QMK / 1P61QMK High-output 161cc–170cc GY6 variants Universal Most Chinese-manufactured 125cc+ vehicles with QM and FM engine codes Mechanic's Tips: Valve keepers are tiny and under immense spring pressure — they are easily lost during disassembly. Use a dab of assembly lube or grease to stick the keepers to the valve stem during installation to prevent them from falling before you release the spring compressor. While you have the springs off, inspect your valve stem seals — it's the ideal time to replace them and prevent oil consumption. About Blue Line Blue Line provides quality OEM-equivalent replacement components for scooters and powersports vehicles, delivering reliable parts at competitive prices for mechanics and enthusiasts worldwide. California Prop 65 Warning: www.p65warnings.ca.gov