{"product_id":"rdr-chrome-silicon-steel-alloy-valve-springs","title":"RDR Chrome Silicon Steel Alloy Valve Springs","description":"\u003cp\u003eRDR's Chrome Silicon Steel Alloy Valve Springs for 139QMB 50cc 4-stroke and 125\/150cc GY6 and GY6B 4-stroke engines are rated for 12,000 RPM. The lighter your valve train components, the quicker the engine revs. Specifications: Includes 2 Inner and 2 Outer Valve Springs Outer Spring Weight: 14g Inner Spring Weight: 7g Coil Diameter Outer Spring: 2.54mm Coil Diameter Inner Spring: 1.95mm Outer Spring Height: 37.3mm Inner Spring Height: 27.3mm Compatibility: 139QMB 50cc 4-stroke and 125\/150cc GY6 and GY6B 4-stroke engines 139QMB-based 50cc \/ 80cc engines with the following engine codes: 139QMA 139QMB 1P39QMB 1P39QMA-2 YN139QMB JJ1P39QMB 139FMA-2 BD1P39QMB BN139QMB 147QMD Other QMA models Other QMB models 157QMJ-based 125cc \/ 150cc \/ 169cc engines with the following engine codes: 157QMJ 161QMK 152QMI 1P61QMK YN1P57QMJ 1P52FMI 154FMI JJ157QMJ 1P57QMJ BN157QMJ BN161QMK-A Other QMJ, QMK, and QMI models Don't see your engine listed? If the engine code includes \"QM\" or \"FM\" and your bike is a 4T, this product is compatible with your vehicle. About RDR: RDR is a Taiwanese manufacturer who specializes in performance and styling parts for scooters and motorcycles. This product is not intended for use on public roads or land.\u003c\/p\u003e","brand":"rdr","offers":[{"title":"Default Title","offer_id":48046169424059,"sku":"169-513","price":28.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/thriftyscooters.com\/products\/rdr-chrome-silicon-steel-alloy-valve-springs","provider":"Thrifty Scooters","version":"1.0","type":"link"}