Engine

Progressively wound springs using Kobe super-clean, chrome silicon-based wire that is heat treated and shot peened Tight-tolerance, FEA-designed hardened steel Posi-LocÖ style upper retainers to ensure correct assembly height and resist keeper "pull...

Kit contains all items to completely refresh and upgrade cylinder heads for popular Dirt/MX and Side x Side models Cylinder Head Service Kits include the below components: Lightweight Racing Valve Spring kits with steel or titanium retainers, beehive or...

Kit contains all items to completely refresh and upgrade cylinder heads for popular Dirt/MX and Side x Side models Cylinder Head Service Kits include the below components: Lightweight Racing Valve Spring kits with steel or titanium retainers, beehive or...

Kit contains all items to completely refresh and upgrade cylinder heads for popular Dirt/MX and Side x Side models Cylinder Head Service Kits include the below components: Lightweight Racing Valve Spring kits with steel or titanium retainers, beehive or...

Progressively wound springs using Kobe super-clean, chrome silicon-based wire that is heat treated and shot peened Tight-tolerance, FEA-designed hardened steel Posi-LocÖ style upper retainers to ensure correct assembly height and resist keeper "pull...

Kit contains all items to completely refresh and upgrade cylinder heads for popular Dirt/MX and Side x Side models Cylinder Head Service Kits include the below components: Lightweight Racing Valve Spring kits with steel or titanium retainers, beehive or...

Kit contains all items to completely refresh and upgrade cylinder heads for popular Dirt/MX and Side x Side models Cylinder Head Service Kits include the below components: Lightweight Racing Valve Spring kits with steel or titanium retainers, beehive or...

Spring kit is designed with increased spring rates and high lift compatibility compared to the stock springs Compatible with boosted or turbocharged applications CNC-machined titanium retainers and Cr-Si dual springs provide valvetrain control at high...

Spring kit is designed with increased spring rates and high lift compatibility compared to the stock springs Compatible with boosted or turbocharged applications CNC-machined titanium retainers and Cr-Si dual springs provide valvetrain control at high...

600" max lift kits are designed for maximum performance Feature interference-wound, double-chrome silicone springs; heat-treated steel base washers Include steel retainers Made in the U.S.A.. SPRING KT 84-04 BT .655TI

Kit contains all items to completely refresh and upgrade cylinder heads for popular Dirt/MX and Side x Side models Cylinder Head Service Kits include the below components: Lightweight Racing Valve Spring kits with steel or titanium retainers, beehive or...

Progressively wound springs using Kobe super-clean, chrome silicon-based wire that is heat treated and shot peened Tight-tolerance, FEA-designed hardened steel Posi-LocÖ style upper retainers to ensure correct assembly height and resist keeper "pull...