40-40350 Intake Valve Spring Kit
40-40350 Intake Valve Spring Kit
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40-40350 Intake Valve Spring Kit
Unlock the full potential of your engine with the 40-40350 Intake Valve Spring Kit. Engineered with precision, this kit is designed to replace your factory titanium intake valves and components with a robust stainless steel valve conversion system. KPMI's expert engineers utilize cutting-edge design and simulation software, ensuring a harmonious synergy between your valve springs and engine performance.
Key Features:
- Stainless Steel Conversion: Durable and reliable replacement for factory titanium valves.
- Advanced Engineering: Developed using proprietary design software for optimal performance.
- Compatibility Assurance: Designed to match valve spring force and natural frequency with cam profiles, system mass, and engine RPM.
- Extended Lifespan: Thousands of riders have experienced prolonged valve life by making the switch.
Benefits:
- Improve engine reliability and performance.
- Minimize the risk of valve-related failures.
- Enhance overall riding experience with better throttle response.
Use Cases:
- Ideal for high-performance motorcycle enthusiasts.
- Perfect for riders seeking to maximize engine longevity.
- Essential for those looking to upgrade their stock components for racing or off-road applications.
Transform your ride and enhance performance with the 40-40350 Intake Valve Spring Kit. Experience the difference that expert engineering and premium materials can make in your motorcycle's performance.
Shipping & Returns
Shipping & Returns
📦 Shipping:
Orders are processed within 1–2 business days. Standard delivery takes 3–7 business days, depending on your location.
↩️ Returns:
You may return or exchange products within 60 days of receiving your order. Items must be in original condition with proof of purchase. If your item is defective or damaged due to manufacturing issues, we’ll replace it at no additional cost.

