# TBParts - 165cc Big Bore Kit DRZ110 - KLX110 - Z125

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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 - 165cc Big Bore Kit DRZ110 - KLX110 - Z125
- **Web page:** [this page on tboltusa.com](https://tboltusa.com/store/tbparts-165cc-big-bore-kit-drz110-klx110-z125-p-398.html)
- **Markdown:** [this page as markdown](https://tboltusa.com/store/tbparts-165cc-big-bore-kit-drz110-klx110-z125-p-398.md)
- **Generated:** 2026-11-10 13:05 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=398`

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

## Summary

- **Part number:** TBW9036
- **Price:** $229.99 USD
- **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=398&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.
- **Reviews:** [1 reviews, average 5 of 5](https://tboltusa.com/store/reviews/tbparts-165cc-big-bore-kit-drz110-klx110-z125-pr-398.html)
- **Product id:** 398
- **Product last changed:** 2026-10-10

## 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)
- [Japanese Mini Bike Parts > Z125 PRO](https://tboltusa.com/store/japanese-mini-bike-parts-z125-pro-c-100_1031.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)
- [TB Parts > Z125 PRO](https://tboltusa.com/store/tb-parts-z125-pro-c-68_1091.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)

165cc Big Bore Performance Kit (64mm)

**Key Features:**

- SKIRTED Aluminum cylinder with Ceramic coating
- High compression 64mm piston with rings, pin, & clips
- Head gasket kit

Affordable and will make your KLX110 or DRZ110 a lot more fun to ride! High quality parts
There are no installation instructions
If you don't have any experience working on your engine, we highly recommend purchasing the shop manual for your bike from your local Kawasaki or Suzuki dealer or TECH DATA
The parts are installed in the same manner as the OEM parts.

**REQUIRES MACHINE SHOP CASE BORE**

Exceeds OEM Standard equipment specification.

**Application:**

- Kawasaki KLX110 2002-2009
- Suzuki DRZ110 2003-2006
- Kawasaki KLX110 and KLX110L
- **Kawasaki Z125PRO**

**Note: Z125PRO APPLICATION MUST BE USED WITH AN AFTERMARKET FUEL CONTROLLER TO PREVENT A LEAN CONDITION AND DAMAGE TO YOUR ENGINE.**

**Kit Includes:**

- TBW1250 Cylinder
- TBW0503 Gasket
- TBW0590 Piston Kit
- TBW0305 Gasket

## 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/398/tbparts-165cc-big-bore-kit-drz110-klx110-z125-1.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.