Honda TRX400EX 400X XR400 Kibblewhite Spring Kit Guides Viton Seals KPMI 30-3111
Complete Kibblewhite Titanium Valve Spring Kit with Bronze Guides and RED Viton Seals for Honda TRX400EX, 400X, and XR400. USA-made performance upgrade for durability and reliability.
Honda TRX400EX 400X XR400 Kibblewhite Titanium Valve Spring Kit + Guides & RED Viton Seals
Premium Kibblewhite Top End Upgrade Package
Revitalize your engine with the Kibblewhite Titanium Spring Kit with Bronze Guides and RED Viton Seals, engineered for all Honda TRX400EX, 400X, and XR400 models. This complete USA-made performance kit restores reliability and maximizes top-end stability under extreme conditions.
🔥 Key Features & Benefits
Built for riders who demand premium durability, enhanced heat resistance, and long-lasting performance from every component of their top end.
- KPMI Part# 30-3111, 30-3120, 71016-4 complete rebuild kit
- Kibblewhite Titanium Valve Spring Kit for race-ready stability
- Precision-machined Bronze Valve Guides for reduced wear
- Includes Genuine KPMI RED Viton Stem Seals (no bait-and-switch blues!).
- Improves engine longevity, reliability, and top-end performance
✅ Compatibility
Designed to be a direct-fit replacement for all Honda 400EX-based heads, ensuring perfect installation every time.
- Honda TRX400EX – All Years
- Honda TRX400X – All Years
- Honda XR400R – All Years
- Replaces Honda OEM: 12209-KL4-005 / 14751-KCY-670
- Replaces Honda OEM: 14761-KG0-003 / 14771-107-020
❓ Frequently Asked Questions (FAQ)
- Q: Are these genuine Kibblewhite components?
A: Yes, every part in this kit is 100% authentic USA-made Kibblewhite performance hardware.
- Q: Are the seals really the RED Viton version?
A: Absolutely — we only ship the high-temp RED Viton seals, not the cheaper blue ones sold elsewhere.
- Q: Does this kit require machining?
A: No machining is typically required when installing on a standard, undamaged cylinder head.
- Q: Is this good for high-RPM or performance builds?
A: Yes, Titanium springs and Viton seals are ideal for race-level RPM, heat, and durability.
🌟 Why Buy from BPRATV? Trusted Performance Experts 🌟
At BPRATV, our promise is unwavering: The Best Parts. The Best Performance. The Best Price. From premium Kibblewhite valvetrain components to full engine packages, we deliver unmatched quality and reliability. Trust BPRATV to keep your Honda TRX400EX / 400X / XR400 running at its best, every single time.
Upgrade your Honda’s top end today — experience real Kibblewhite performance!
BPRATV - The Best Parts. The Best Performance. The Best Price.
BRAPPPPPPPPPP!
© BPRATV LLC 1-year limited warranty from the manufacturer for material or workmanship defects.*
Due to the nature of high performance and racing applications, BPRATV LLC components are sold without express warranty or any implied warranty of merchantability or fitness for a specific purpose. BPRATV LLC shall not, under any circumstances, be liable for any specific, incidental or consequential damages, including, but not limited to, damage, or loss of property or equipment, loss of profits or revenue(s), cost of purchased or replacement goods, or claims of customers of the purpose, which may arise and/or shall result from sale, installation or use of these parts. Installation of these parts may void vehicle manufacturers warranty coverage and/or may cause the vehicle to be illegal in some locations.
This product is exempt from the emission standards and related requirements of 40 C.F.R. § 1051 as provided by 40 C.F.R. § 1051.620, and California law [e.g., vehicle code §§ 27156 and 38391]. This product is sold only for use in connection with EPA-certified, purpose-built, nonroad vehicles used solely for closed course, nonroad competition/racing and not used for any recreational purpose or on public highways or right of ways maintained by and open to the public. This product is sold only in connection with machines that do not fall under state and/or federal noise or emission standards/regulations. Purchasers who/that purchase this product represent and warrant that the product is purchased only in connection with EPA-certified, emission-regulations-exempt and noise-regulations-exempt competition/racing vehicles as interpreted under applicable state and/or federal law.
