Honda TRX450R Complete Head Rebuild Kit – KPMI Valves, Guides & Springs + Gaskets (2004–2005)
Honda TRX450R Complete Head Rebuild Kit – KPMI Valves, Guides & Springs + Gaskets (2004–2005)
Honda TRX450R Complete Head Rebuild Kit – KPMI Valves, Guides & Springs + Gaskets (2004–2005)
Honda TRX450R Complete Head Rebuild Kit – KPMI Valves, Guides & Springs + Gaskets (2004–2005)
Honda TRX450R Complete Head Rebuild Kit – KPMI Valves, Guides & Springs + Gaskets (2004–2005)
Honda TRX450R Complete Head Rebuild Kit – KPMI Valves, Guides & Springs + Gaskets (2004–2005)

Honda TRX450R Complete Head Rebuild Kit – KPMI Valves, Guides & Springs + Gaskets (2004–2005)

  • Ships next business day
  • 30-day hassle-free returns
  • Call us: 541-668-7503
  • Secure checkout — Pay in 4 available
Regular price$642.00
/
Shipping calculated at checkout.

✓ Fits:

  • 2004-2005 Honda TRX450R

✓ Bundle Includes (complete 5-valve head rebuild):

  • 1x KPMI Racing Valve Spring Kit (30-30720) — $207.95 ea
  • 3x KPMI Black Diamond Intake Valve (30-30750) — $30.95 ea
  • 2x KPMI Black Diamond Exhaust Valve (30-30753) — $30.95 ea
  • 3x KPMI Bronze Intake Valve Guide (30-30730) — $15.95 ea
  • 2x KPMI Bronze Exhaust Valve Guide (30-30740) — $15.95 ea
  • 1x Vertex Valve Cover Gasket (817851) — $13.87 ea
  • 1x Cylinder Works Top End Gasket Kit 97mm BB (11003-G01) — $99.95 ea

Bundle Price: $445.02 — Save $111.25 vs buying separately (20% off $556.27 combined retail)

✓ Features:

  • Complete head rebuild kit for the TRX450R 5-valve DOHC head — 3 intake, 2 exhaust
  • KPMI Black Diamond valves — Finite Element Analysis design, hard chrome 360-degree anode finish
  • Proven heat and corrosion resistance for high performance racing applications
  • KPMI Bronze valve guides — C630 nickel bronze, 5% nickel for superior wear resistance, 80% copper for outstanding heat conductivity
  • KPMI Racing valve spring kit — Premium Kobe Super-Clean Chrome Silicon wire, heat-treated, stress relieved, and shot peened
  • 80 lbs seat pressure / 205 lbs at 0.435" lift — engineered for high RPM performance
  • Cylinder Works top end gasket kit — matched for the 97mm big bore application
  • Vertex valve cover gasket — OEM-spec seal to finish the job properly
  • Everything you need for a complete top end and head rebuild in one kit

✓ What's Included:

  • 1x KPMI Racing Valve Spring Kit (191-21012) — full 5-valve set
  • 3x KPMI Black Diamond Intake Valve (191-11025)
  • 2x KPMI Black Diamond Exhaust Valve (191-11026)
  • 3x KPMI Bronze Intake Valve Guide (191-51020)
  • 2x KPMI Bronze Exhaust Valve Guide (191-51021)
  • 1x Vertex Valve Cover Gasket (176-817851)
  • 1x Cylinder Works Top End Gasket Kit 97mm Big Bore (422-110033)

Ships fast from DuneGoonShop!

📦 Shipping Information

In-stock items ship next business day. ModQuad parts dispatch Monday through Thursday.

Made-to-order and custom powder coat items show their lead time at the top of this page, right next to the truck icon. These are built fresh for you, so timing varies by brand and current backlog.

Need something by a specific date? Call us at 541-668-7503 before ordering and we will check stock and ETA on that exact part. We can often point you to an in-stock alternative from another distributor.

Questions? Contact us, we respond within 24 hours.

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

Dune Goons Clothing

Dune Goons children's clothing in any color and any size with any logo. Just contact us for custom orders. We love people that wear Dune Goons!