Kibblewhite Oversize Intake Valve TRX400EX XR400R 34mm
Kibblewhite Black Diamond™ Oversize Intake Valve – Honda TRX400EX / TRX400X / XR400R (34mm EV8 Stainless)
🛠️ Need more airflow? This Kibblewhite Black Diamond™ 34mm oversized intake valve is perfect for high-performance head builds and ported applications. Made in the USA from EV8 stainless steel and precision CNC-machined, it's the go-to upgrade for serious riders pushing for more power.
✅ Features:
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Oversize 34.00 mm Black Diamond™ intake valve
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Forged from EV8 stainless steel for max strength
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CNC-machined and flow-bench tested
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German nitroneg treatment improves wear, reduces friction, and resists corrosion
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F.E.A. (Finite Element Analysis) designed for optimal flow profiles
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Compatible with OEM-style retainers and keepers
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Made in the USA
📦 Fitment:
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Honda TRX400EX Sportrax: 2000–2005
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Honda TRX400EX FourTrax: 1999
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Honda TRX400X: 2009
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Honda XR400R: 1996–2004
Note: Oversize valve requires corresponding head work or ported head
📐 Specs:
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Application: Intake
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Head Diameter: 34.00 mm (1.340")
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Stem Diameter: 5.50 mm (0.2156")
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Length: 102.1 mm (4.020")
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Tulip Angle: 20°
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Material: EV8 Stainless Steel
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Model: Black Diamond™
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Size: Oversize
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Units: Each
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Weight: 0.13 lbs
🛡️ Warranty Info:
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Covered under Kibblewhite’s limited manufacturer warranty
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Professional installation recommended on ported heads
📦 Shipping Information
In-Stock Items:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch
Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
- Sneakers: 1–2 weeks
Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.
Questions? Contact us—we respond within 24 hours.