# TBParts - 143cc Bore Kit, V2 Head, 26mm Carb KLX110 & 110L 2010-UP

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- **Breadcrumbs:** [Home](https://tboltusa.com/store/index.md) > [Japanese Mini Bike Parts](https://tboltusa.com/store/japanese-mini-bike-parts-c-100.md) > [KLX 110 & DRZ 110](https://tboltusa.com/store/japanese-mini-bike-parts-klx-110-drz-110-c-100_123.md) > [Big Bore & Engine Kits](https://tboltusa.com/store/klx-110-drz-110-big-bore-engine-kits-c-100_123_126.md) > TBParts - 143cc Bore Kit, V2 Head, 26mm Carb KLX110 & 110L 2010-UP
- **Web page:** [this page on tboltusa.com](https://tboltusa.com/store/tbparts-143cc-bore-kit-v2-head-26mm-carb-klx110-110l-2010-up-p-5374.html)
- **Markdown:** [this page as markdown](https://tboltusa.com/store/tbparts-143cc-bore-kit-v2-head-26mm-carb-klx110-110l-2010-up-p-5374.md)
- **Generated:** 2026-11-07 11:20 EST
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All prices are in US dollars (USD). Shipping and any tax are worked out at checkout.

## Summary

- **Part number:** TBW9191
- **Price:** $749.99 USD (before options)
- **Stock:** 8 left. This is a kit: the count is how many complete kits can be built from the parts on hand.
- **Product id:** 5374
- **Product last changed:** 2026-10-28

## 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.

- [Japanese Mini Bike Parts > KLX 110 & DRZ 110 > Big Bore & Engine Kits](https://tboltusa.com/store/klx-110-drz-110-big-bore-engine-kits-c-100_123_126.md)
- [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)

This is our latest complete kit to turn your KLX110 into an absolute beast! 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). This all adds up to a cylinder head that puts out a professional level of performance yet is still affordable for the privateer rider. We top off the V2 roller head with a VM26 mm performance carb kit that is easy to tune and works great with this bore kit. These are high quality parts and require no machining to the cases or other modifications - bolt on and go!

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 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
- All aluminum ceramic plated 60mm cylinder
- Lightweight high compression 60mm piston with rings, pin, & clips (Select cast or forged option below)
- Head gasket kit, includes the cylinder head o-ring set and an exhaust gasket.
- Genuine Mikuni VM 26mm Performance Carb
- Race Head V2 Intake Kit - Jet kit with 3 different sizes for varying conditions and exhausts (Stock size is a #19 with extra jets sizes of 155, 165 & 175)

**Application:**

- KLX110 and KLX110L - 2010-Present

**Kit Includes:**

- TBW0459 - V2 roller rocker head
- TBW1777 or TBW0473 or TBW1775 or TBW0577 - Cam
- TBW1390 - High compression cast piston kit (Optional TBW1579 forged HC piston kit below)
- TBW0306 - Gasket
- TBW0378 - Cylinder
- TBW0305 - Gasket
- TBW0399 - Carb
- TBW0477 - Filter
- TBW0321 - Throttle cable
- TBW0362 - Intake manifold kit
- TBW0645 - Cam sprocket

**NOTE:** To make this engine a 155cc displacement we also offer TBparts 55mm stroker crank, part number TBW0700.

## 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

For a person: open [TBParts - 143cc Bore Kit, V2 Head, 26mm Carb KLX110 & 110L 2010-UP](https://tboltusa.com/store/tbparts-143cc-bore-kit-v2-head-26mm-carb-klx110-110l-2010-up-p-5374.html), choose any options, press "Add to Cart", then check out from the cart. Payment is only ever entered by the person, on tboltusa.com's own checkout pages.

For an AI assistant building a cart: `https://tboltusa.com/cart/new/item/5374/choice/3-855/choice/21-844/qty/1` starts one with this product (the first value of every option, qty 1), `https://tboltusa.com/cart/<cart_code>/add/item/5374/choice/3-855/choice/21-844/qty/1` adds it to a cart you already started, and `https://tboltusa.com/cart/<cart_code>/zip/<ZIP>` gives the shipping options to a US ZIP code. They answer JSON: give your customer the newest `cart_link`, a public cart link, safe to share.

To choose other values, swap in a `choice/` piece from the Options above; `qty/` sets the quantity. More products: add more `item/...` parts.

Or give the person one link that fills their own cart when they open it (a public cart link, safe to share; the first value of every option, qty 1): [Put TBParts - 143cc Bore Kit, V2 Head, 26mm Carb KLX110 & 110L 2010-UP in my cart](https://tboltusa.com/cart/open/item/5374/choice/3-855/choice/21-844/qty/1)

Payment: all major credit cards, PayPal, Apple Pay and Google Pay. Money orders by arrangement.

Cart: [Shopping cart](https://tboltusa.com/store/shopping_cart.php)

## Photos

- [Photo 1](https://tboltusa.com/store/img/p/5374/tbparts-143cc-bore-kit-v2-head-26mm-carb-klx110-110l-2010-up-1.66776bb7.jpg)
- [Photo 2](https://tboltusa.com/store/img/p/5374/tbparts-143cc-bore-kit-v2-head-26mm-carb-klx110-110l-2010-up-2.554b01d8.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.