# TBParts - 178cc Big Bore Kit for 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 - 178cc Big Bore Kit for DRZ110 - KLX110 - Z125
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All prices are in US dollars (USD). Shipping and any tax are worked out at checkout.

## Summary

- **Part number:** TBW9145
- **Price:** $239.99 USD
- **Stock:** 2 left. This is a kit: the count is how many complete kits can be built from the parts on hand.
- **Product id:** 8599
- **Product last changed:** 2021-07-13

## 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)

178cc Big Bore Performance Kit (67mm)
Huge 67mm Piston Kit. Max size for KLX110, KLX110L, DRZ110 on the market!

**Key Features:**

- SKIRTED Aluminum cylinder w/ Ceramic liner
- High compression 67mm 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.

**CASE BORE REQUIRED**
**Must use with the Race Head V2 or check clearances carefully (not tested with other heads at this time)**

Exceeds OEM Standard equipment specification.

**Application:**

- Kawasaki KLX110 2002-2009
- Suzuki DRZ110 2003-2006
- Kawasaki KLX110 and KLX110L
- Kawasaki Z125 PRO

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

**Kit Includes:**

- TBW0897 Cylinder
- TBW1007 Gasket
- TBW0758 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

For a person: open [TBParts - 178cc Big Bore Kit for DRZ110 - KLX110 - Z125](https://tboltusa.com/store/tbparts-178cc-big-bore-kit-for-drz110-klx110-z125-p-8599.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/8599/qty/1` starts one with this product (the first value of every option, qty 1), `https://tboltusa.com/cart/<cart_code>/add/item/8599/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.

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 - 178cc Big Bore Kit for DRZ110 - KLX110 - Z125 in my cart](https://tboltusa.com/cart/open/item/8599/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/8599/tbparts-178cc-big-bore-kit-for-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.