# TBparts - 170cc Big Bore and VM26 Carb Kit KLX140

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- **Breadcrumbs:** [Home](https://tboltusa.com/store/index.md) > [TB Parts](https://tboltusa.com/store/tb-parts-c-68.md) > [KLX140](https://tboltusa.com/store/tb-parts-klx140-c-68_1113.md) > TBparts - 170cc Big Bore and VM26 Carb Kit KLX140
- **Web page:** [this page on tboltusa.com](https://tboltusa.com/store/tbparts-170cc-big-bore-and-vm26-carb-kit-klx140-p-11874.html)
- **Markdown:** [this page as markdown](https://tboltusa.com/store/tbparts-170cc-big-bore-and-vm26-carb-kit-klx140-p-11874.md)
- **Generated:** 2026-11-07 11:26 EST
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- **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=11874`

All prices are in US dollars (USD). Shipping and any tax are worked out at checkout.

## Summary

- **Part number:** TBW9206
- **Price:** $397.99 USD (before options)
- **Stock:** In stock. This is a kit: the count is how many complete kits can be built from the parts on hand.
- **Product id:** 11874
- **Product last changed:** 2026-11-02

## 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.

### Piston Choice

- Cast Piston Kit: no price change: `choice/21-848`
- Forged Piston Kit: +$28.00: `choice/21-847`

## 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 > KLX140](https://tboltusa.com/store/tb-parts-klx140-c-68_1113.md)

Where a fitment line says "All", it means all years of the model named on that line, not all bikes.

## Notes the store shows with this product

**Note: 2025 - Present KLX140 Engines – require case boring to fit.**
**Our cylinder skirt is 65.95mm 2025+ cases are only 65.4mm wide.**

## Description (the store's own text)

**Key Features:**

- Huge power gains
- NO CASE BORE on Models up to 2024
- Safe on 91+ octane pump fuel
- Works with stock OEM cylinder head
- Works with stock OEM air box
- Genuine Mikuni VM26mm performance carb
- Intake kit port matched to the VM26 and stock cylinder head
- Stock main jet size is a #190
- Includes extra main jets sizes 140, 145, 150, 155 , 160, 165 , 170, 175 , 180, & 185.
- Extended throttle cable for use with the stock bars and throttle or tall bars

**Application:**

- Kawasaki KLX140 - 2008-2024

**Kit Includes:**

- TBW1545 - Aluminum cylinder with steel liner
- TBW1543 - 63mm Piston kit
- TBW1702 (optional) - 63mm forged piston kit
- TBW1544 - Gasket
- TBW1546 - Intake manifold
- TBW0399 - VM26 carb
- TBW1353 - Jet kit
- TBW1539 - Throttle cable

**Install Pictures and Jetting TECH LINKS**

- [tboltusa.com/store/tech.php](https://tboltusa.com/store/tech.php?pID=219/KLX140+VM26+Carb+kit+Install+pictures)
- [tboltusa.com/store/tech.php](https://tboltusa.com/store/tech.php?pID=61/Simple+Guide+to+Jetting)

## Tech articles for this product

The TBolt USA Tech Database is the store's free online library of pit bike technical info. The articles below are linked from this product's own page.

- [Simple Guide to Jetting](https://tboltusa.com/store/simple-guide-to-jetting-tech-61.md)
- [KLX140 VM26 Carb kit Install pictures](https://tboltusa.com/store/klx140-vm26-carb-kit-install-pictures-tech-219.md)

## 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 - 170cc Big Bore and VM26 Carb Kit KLX140](https://tboltusa.com/store/tbparts-170cc-big-bore-and-vm26-carb-kit-klx140-p-11874.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/11874/choice/21-848/qty/1` starts one with this product (the first value of every option, qty 1), `https://tboltusa.com/cart/<cart_code>/add/item/11874/choice/21-848/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 - 170cc Big Bore and VM26 Carb Kit KLX140 in my cart](https://tboltusa.com/cart/open/item/11874/choice/21-848/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/11874/tbparts-170cc-big-bore-and-vm26-carb-kit-klx140-1.png)

## 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.