KPMI 40-40660 Racing Valve Spring Kit – Fits Kawasaki KX450F (2009-2016), [MPN:40-40660]
The KPMI 40-40660 Racing Valve Spring Kit is designed to enhance performance and durability for Kawasaki KX450F models from 2009 to 2016. Crafted from premium Kobe Super-Clean Chrome Silicon Wire, these springs undergo heat treatment, stress relief, and shot peening to ensure maximum strength and longevity. Each spring is engineered using advanced simulation software, paying close attention to cam and spring harmonics, stress levels, mass, and operating RPM to optimize performance.
Features include 80 lbs of seat pressure and 205 lbs at 0.435 inches lift, providing robust support for high-performance applications. The kit is compatible with the OEM integrated seal/base (OE# 3610212) where applicable, ensuring proper fit and function. Lightweight, heat-treated steel retainers and beehive springs reduce reciprocating mass, which is critical for high-revving racing engines, resulting in improved throttle response and engine efficiency.
This valve spring kit is ideal for racers and enthusiasts seeking to upgrade their Kawasaki KX450F with reliable, high-performance components. Its durable construction and precision engineering help maintain valve stability under extreme conditions, supporting aggressive cam profiles and boosted applications. Installation of these springs can provide noticeable improvements in engine responsiveness and overall power delivery, making it a valuable upgrade for competitive motocross or intense trail riding.
ATTRIBUTES:
BRAND: KPMI
MPN: 40-40660, 40-40660
VPN: , 191-22008
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