Kibble White Light Racing Kit Valve springRef : KIBW00153A / 09260095

Manufacturer reference: 80-80206

The Kibblewhite Lightweight Spring Kit provides a robust solution for those looking to enhance the reliability of the valve train on modified engines. Designed for supercharged or turbocharged applications and for high-lift camshafts, this kit replaces the original springs with increased rate components and machined retainers to support high RPMs without undesirable valve float. Made in the United States, this pack combines high-performance materials and meticulous machining to meet the demands of motocross, enduro, and quads.

• Application: Intake & Exhaust
• Spring height: 0.380
• Spring material: Cr‑Si alloy (chrome-silicon)
• Retainer material: CNC machined titanium (or H.T. steel depending on part)
• Model: Lightweight
• Universe: Quad, Enduro, Motocross

The kit includes:

• 3x titanium intake retainers
• 2x titanium exhaust retainers
• 3x Cr‑Si intake valve springs (dual spring)
• 2x Cr‑Si exhaust valve springs (dual spring)
• 3x H.T. steel intake base washers
• 2x H.T. steel exhaust base washers
• 3x Viton® intake seals
• 2x Viton® exhaust seals

Compatible with many modifications based on the 450 (e.g. YAMAHA YZ 450 F 2016‑2017, YFZ 450 R), this kit is aimed at riders and tuners looking for enhanced valve retention without compromising reliability. Please follow the manufacturer's recommendations for installation and adjustment).