Top End

Coated with MOS2 for high performance and heat absorptionPorted to match WSM Banshee sleevesFit bores from 64mm to 70.5mmPiston pin is 5mm higher on long rod pistons to accommodate long rodMade in Germany Yamaha -- Banshee 350 4x2 -- (1996, 1994, 1993,...

Kibblewhite Valve Kit - Intake 40-41650 Kawasaki -- KX 250 F -- (2020, 2021)

Kibblewhite Valve Guide - Exhaust - +0.010" 40-41639 Kawasaki -- KX 250 F -- (2020, 2021)

Kibblewhite Valve Guide - Exhaust - Standard 40-41630 Kawasaki -- KX 250 F -- (2020, 2021)

Kibblewhite Valve Guide - Intake - +0.010" 40-41629 Kawasaki -- KX 250 F -- (2020, 2021)

Kibblewhite Valve Guide - Intake - Standard 40-41620 Kawasaki -- KX 250 F -- (2020, 2021)

Kibblewhite Spring Kit 40-41600 Kawasaki -- KX 250 F -- (2020, 2021)

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

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

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

Stainless steel conversion kit includes only what's needed to convert your head to the long-life stainless steel Black Diamond intake valvesExtends the life of the valvetrain and intake components by as much as 4x over the OEM titanium partsIncludes...

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