# TBparts - 143cc V2 Race Head Upgrade Kit for DRZ110 and KLX110 > This is a plain-text (markdown) copy of a page on tboltusa.com, made for AI assistants. People see the same page at the HTML link below. - **Breadcrumbs:** [Home](https://tboltusa.com/store/index.md) > [TB Parts](https://tboltusa.com/store/tb-parts-c-68.md) > [KLX110 DRZ110](https://tboltusa.com/store/tb-parts-klx110-drz110-c-68_1048.md) > [KLX110 DRZ110 Big bore and Stroker Kits](https://tboltusa.com/store/klx110-drz110-klx110-drz110-big-bore-and-stroker-kits-c-68_1048_1049.md) > TBparts - 143cc V2 Race Head Upgrade Kit for DRZ110 and KLX110 - **Web page:** [this page on tboltusa.com](https://tboltusa.com/store/tbparts-143cc-v2-race-head-upgrade-kit-for-drz110-and-klx110-p-1414.html) - **Markdown:** [this page as markdown](https://tboltusa.com/store/tbparts-143cc-v2-race-head-upgrade-kit-for-drz110-and-klx110-p-1414.md) - **Generated:** 2026-11-03 23:54 EST - **Site guide for AI assistants:** [llms.txt](https://tboltusa.com/llms.txt) - **Your list:** To list everything you have looked at in one page, with current prices and stock, add ids to this address (comma separated, up to 20 of each): `https://tboltusa.com/store/seen.md?p=1414` All prices are in US dollars (USD). Shipping and any tax are worked out at checkout. ## Summary - **Part number:** TBW9019 - **Price:** $494.99 USD (before options) - **Stock:** Out of stock. It cannot be added to the cart right now. A person can ask to be emailed when it is back: [Get on the List](https://tboltusa.com/store/contact_us.php?pid=1414&stockcheck=true) ([Contact us](https://tboltusa.com/store/contact_us.md)) This is a kit: the count is how many complete kits can be built from the parts on hand. - **Product id:** 1414 - **Product last changed:** 2025-06-02 ## Options This product has options. Pick one value for every option. A value marked +$X adds that amount to the price; -$X takes it off. ### Cam Selection - TBW1777 - Stage 1 Camshaft: no price change: `choice/3-855` - TBW0473 - Stage 2 Camshaft: no price change: `choice/3-856` - TBW1775 - Stage 3 Camshaft: no price change: `choice/3-857` - TBW0577 - Stage 4 Camshaft: no price change: `choice/3-858` ### Piston Choice - Cast Piston Kit TBW1390: no price change: `choice/21-844` - Forged Piston Kit TBW1579: +$30.00: `choice/21-845` ## What it fits The store lists a part under each bike or engine model it is meant for (the categories below) and may name models in the description. Do not assume it fits a bike or engine that is not named here; ask the store first. - [TB Parts > KLX110 DRZ110 > KLX110 DRZ110 Big bore and Stroker Kits](https://tboltusa.com/store/klx110-drz110-klx110-drz110-big-bore-and-stroker-kits-c-68_1048_1049.md) Where a fitment line says "All", it means all years of the model named on that line, not all bikes. ## Description (the store's own text) Upgrade your 143cc kit to a full V2 race head! (Re-using your 60mm Cylinder, 60mm Cylinder **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! 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. *Exceeds OEM Specifications.* **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 60mm piston with rings, pin, & clips (Select Cast or Forged option below) - 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). **Application:** - Kawasaki KLX110 - 2002-2009 - Kawasaki KLX110 and KLX110L - 2010-Present **(with additional TBW0645 sprocket)** - Suzuki DRZ110 - All Years **Kit Includes:** - TBW0459 - V2 head - TBW1777 or TBW0473 or TBW1775 or TBW0577 camshaft - TBW0362 - Intake manifold kit - TBW1390 - Cast piston kit or optional TBW1579 forged piston kit below - TBW0306 - Gasket set ## More notes the store shows with this product **Camshaft Selection info:** TBW1777 - Stage 1 Camshaft - Best low end to midrange TBW0473 - Stage 2 Camshaft - Great low end to midrange with more over-rev TBW1775 - Stage 3 Camshaft - Good low end, better midrange to top end TBW0577 - Stage 4 Camshaft - Best midrange to top end with best over-rev ## Shipping and returns - Flat rate shipping is $8 for parts orders under $75 and free for most parts orders over $75, within the continental 48 states. Heavy items (engines, complete bikes, suspension) are excluded. - Full shipping policy: [Shipping policies](https://tboltusa.com/store/shipping-policies-i-6.md) - Returns: the store's own policy page says how returns, exchanges and cancellations work. Please read it before buying: [Returns, Exchanges and Cancellations](https://tboltusa.com/store/returns-exchanges-and-cancellations-i-11.md) The page begins: "All products returned to T Bolt USA must be reviewed and approved." ## How to buy This item is out of stock, so it cannot go in the cart now (see Stock above). Cart: [Shopping cart](https://tboltusa.com/store/shopping_cart.php) ## Photos - [Photo 1](https://tboltusa.com/store/img/p/1414/tbparts-143cc-v2-race-head-upgrade-kit-for-drz110-and-klx110-1.jpg) ## Support 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](https://tboltusa.com/store/tbolt-usa-pit-bike-minimoto-technical-info-database-tech-15.md)! We have all necessary support parts on hand. *Most* orders ship same, or next business day, unless otherwise noted above.