TBolt USA is open and filling orders quicker than ever!
Email: contact@tboltusa.comText 704-826-5887Request a Callback

TBParts - 143cc Race Head V2 Upgrade Kit for DRZ110 and KLX110

Vital Information
Part No TBW9019
Stock Level Out of Stock!
Want an email when we get this back in?
Get on the List

For 2002-2009 no additional parts required
For 2010-Present must use TBParts cam sprocket for KLX and DRZ110 2010-Present
For TBParts Race Heads
[TBW0645 cam sprocket] NOT INCLUDED

This all adds up to a cylinder head that puts out a professional level of performance yet is still affordable for the privateer rider. Included is a piston with bigger reliefs to match the larger valves of the new race head. Unlike other kits, our head gasket kit also includes a head o-ring set and exhaust gasket so you don't have to re-use your old ones or make a trip to your local dealer to get new ones and spend more money. These are high quality parts and require no machining to the cases or other modifications - bolt on and go!
Add a stroker crankshaft for even more power!

Upgrade your 143cc kit to a Full Race V2 Head
(Re-Using your 60mm Cylinder - 60mm Cylinder NOT Included)

There are no installation instructions, but if you can replace your piston, you can install this kit. If you don't have any experience working on your engine, we highly recommend having a professional technician install this kit or, at a minimum, purchasing the shop manual for your bike available in our TECH DATA or from your local Kawasaki or Suzuki dealer.
The parts are installed in the same manner as the OEM parts.


  • TBW0473 cam is stronger through the low and mid range with a little less on the very top.
  • TBW0577 cam is a little stronger on the very top with less through the low and mid range.

Key Features:

  • Roller rockers, 30mm intake valve, 24.5mm exhaust valve, 27mm intake port, 23mm exhaust port (valves installed). Now with Aluminum Rocker Arms
  • Lightweight high compression domed 60mm piston with rings, pin, & clips
  • includes the cylinder head o-ring set and an exhaust gasket.
  • Race Head V2 Intake Kit This kit is to upgrade the cylinder head on KLX110s with a 143 kit installed to our new Race Head V2.
  • While the 143 bore kit provides a nice power gain over stock, wait until you try this upgrade!!
  • The addition of roller rocker arms and a new camshaft are the biggest changes followed by bigger valves and ports.
  • The exhaust valve is now stainless as well (21-4N material).

Exceeds OEM standard equipment specification


  • Kawasaki KLX110 - 2002-2009
  • Kawasaki KLX110 and KLX110L - 2010-Present (with additional TBW0645 sprocket)
  • Suzuki DRZ110 - All Years

Kit Includes:

  • TBW0459 - Head and Valves
  • TBW0473 OR TBW0577 - Cam
  • TBW0474 - Intake Manifold Kit
  • TBW1390 - Piston kit
  • TBW0306 - Gasket set

Available Options:

Cam Choice:

Write Review

Since 2004, every purchase from TBolt USA includes access to technical support from our staff of experts and our online Pit Bike Technical Info Database!

We have all necessary support parts on hand.

Most orders ship same, or next business day, unless otherwise noted above.