Kibblewhite Exhaust Valve TRX400EX XR400R (Black Diamond 29mm) (1996-2005)
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Kibblewhite Black Diamond™ Exhaust Valve – Honda TRX400EX / TRX400X / XR400R (29mm EV8 Stainless)
🛠️ This Kibblewhite Black Diamond™ exhaust valve is precision engineered for durability and performance. CNC-machined from one-piece EV8 stainless steel, it’s treated with a special German nitroneg process that dramatically improves wear resistance, corrosion protection, and valve longevity—making it a superior upgrade for any top end rebuild.
✅ Features:
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Black Diamond™ Series: CNC-machined from EV8 stainless steel
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One-piece forged construction for superior strength
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Nitroneg-infused surface for max durability
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Superior to chrome and nickel plating in wear resistance
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Designed using F.E.A. software and flow-bench tested
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29° tulip angle for improved exhaust flow
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Made in the USA
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Compatible with OEM retainers and keepers
📦 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
📐 Specs:
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Application: Exhaust
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Series: Black Diamond™
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Head Diameter: 29.00 mm (1.142")
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Stem Diameter: 5.50 mm (0.2150")
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Length: 101.1 mm (3.980")
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Tulip Angle: 29°
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Material: EV8 Stainless Steel
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Units: Sold Each
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Weight: 0.13 lbs
🛡️ Warranty Info:
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Backed by Kibblewhite’s limited manufacturer warranty
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Made in the USA and trusted worldwide
📦 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
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.