SPRING VALVE SET/20 2004-2006 YAMAHA YZF R1 KIBBLEWHITE 80-80503
4.1 Trustpilot 99.9% positive on eBay
Delivery to United States 5–8 business days
Spread the cost with
High-performance valve spring engineered for precise control and durability in demanding engine applications. Designed and validated using advanced in-house simulation to optimize stress distribution and fatigue life, it undergoes targeted stress relief and shot peening to enhance mechanical strength and consistency. Features include in-house design using proprietary software, stress relief for improved stability under high load, and shot peening to increase fatigue strength and durability. This high-performance spring is supplied as spring only. Manufacturer: KPMI. Product type: Valve spring (spring only). Application: High-performance motorcycle engine valvetrain. Cross-Reference Numbers: 65-6330, 80-80503.
- SKU
- 65-6330
- Brand
- Kibblewhite
- Availability
- In Stock (2)
- General Product Group
- Cam & Valvetrain
- General Product Type
- Valve Spring
- Variant Id
- 264274
FULL DESCRIPTION
KPMI High-Performance Motorcycle Valve Springs
Enhance your motorcycle's engine performance and durability with these KPMI high-performance valve springs. Engineered for precision and built to withstand demanding conditions, these valve springs are designed for optimal control and longevity in high-performance engine applications.
Utilizing advanced in-house simulation software, KPMI has meticulously optimized the stress distribution and fatigue life of these springs. The manufacturing process includes targeted stress relief and shot peening, crucial steps that significantly improve mechanical strength, consistency, and overall fatigue resistance.
Key Features:
- Proprietary Design: Developed in-house using advanced simulation software for superior performance.
- Stress Relieved: Enhanced stability under high load conditions.
- Shot Peened: Increased fatigue strength and extended durability.
- High Performance: Engineered for demanding motorcycle engine valvetrain requirements.
- Spring Only: Supplied as individual valve springs.
Specifications:
- Manufacturer: KPMI
- Product Type: Valve Spring (Spring Only)
- Application: High-Performance Motorcycle Engine Valvetrain
- Cross-Reference Numbers: 65-6330, 80-80503
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).
Call or email us with your make, model and year and we will check it for you before you order.
Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.
Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.


