# Z50 88-99 Big Bore and stroker kits

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- **Breadcrumbs:** [Home](https://tboltusa.com/store/index.md) > [TB Parts](https://tboltusa.com/store/tb-parts-c-68.md) > [Z50 88-99](https://tboltusa.com/store/tb-parts-z50-88-99-c-68_1056.md) > Z50 88-99 Big Bore and stroker kits
- **Web page:** [this page on tboltusa.com](https://tboltusa.com/store/z50-88-99-z50-88-99-big-bore-and-stroker-kits-c-68_1056_1057.html)
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- **Generated:** 2026-11-05 12:54 EST
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All prices are in US dollars (USD). Shipping and any tax are worked out at checkout.

Products are filed in categories. Most top categories split by bike or engine model; a product can be listed in more than one category.

## Next to this category

- [Z50 88-99 Carb Kits and parts](https://tboltusa.com/store/z50-88-99-z50-88-99-carb-kits-and-parts-c-68_1056_1058.md)
- [Z50 88-99 Chassis Parts](https://tboltusa.com/store/z50-88-99-z50-88-99-chassis-parts-c-68_1056_1059.md)
- [Z50 88-99 Engine and clutch parts](https://tboltusa.com/store/z50-88-99-z50-88-99-engine-and-clutch-parts-c-68_1056_1062.md)
- [Z50 88-99 Exhaust pipe](https://tboltusa.com/store/z50-88-99-z50-88-99-exhaust-pipe-c-68_1056_1060.md)
- [Z50 88-99 Shifter Kicker throttle lever](https://tboltusa.com/store/z50-88-99-z50-88-99-shifter-kicker-throttle-lever-c-68_1056_622.md)
- [Z88-99 Z50 Electrical](https://tboltusa.com/store/z50-88-99-z88-99-z50-electrical-c-68_1056_1061.md)

## Products

Showing 1 to 7 of 7 products (page 1 of 1).

- [TBParts - 88cc Big Bore Kit for Z50 CRF50 XR50 1988-Present](https://tboltusa.com/store/tbparts-88cc-big-bore-kit-for-z50-crf50-xr50-1988-present-p-759.md): part number `TBW0928`; $149.99 USD; 8 left
- [TBParts - 88cc Big Bore Kit with Carb for Z50 1988 - 1999](https://tboltusa.com/store/tbparts-88cc-big-bore-kit-with-carb-for-z50-1988-1999-p-12405.md): part number `TBW9434`; $179.99 USD; 7 left
- [TBParts - Roller Rocker Race Head V2 108cc Big Bore w/ Mikuni VM26 Z50 XR50 & CRF50 1988-Present](https://tboltusa.com/store/tbparts-roller-rocker-race-head-v2-108cc-big-bore-mikuni-vm26-z50-xr50-crf50-1988-present-p-8738.md): part number `TBW9118`; $902.99 USD; 2 left
- [TBparts - Roller Rocker Race Head V2 88cc Big Bore Kit Z50 CRF50 XR50 & Pit bikes w/ Mikuni VM24 Carb](https://tboltusa.com/store/tbparts-roller-rocker-race-head-v2-88cc-big-bore-kit-z50-crf50-xr50-pit-bikes-mikuni-vm24-carb-p-8727.md): part number `TBW9115`; $774.99 USD; 2 left
- [TBParts - Roller Rocker Race Head V2 Kit for 88cc & 108cc Z50 CRF50 XR50 & Pit bikes](https://tboltusa.com/store/tbparts-roller-rocker-race-head-v2-kit-for-88cc-108cc-z50-crf50-xr50-pit-bikes-p-8600.md): part number `TBW9102`; $549.99 USD; 2 left
- [TBParts 88cc Big Bore Kit, Race Cam and 20mm Carb Kit for Z50 CRF50 XR50 88-Present](https://tboltusa.com/store/tbparts-88cc-big-bore-kit-race-cam-and-20mm-carb-kit-for-z50-crf50-xr50-88-present-p-396.md): part number `TBW0930`; $269.99 USD; out of stock
- [TBParts - Race Head, 88cc Big Bore and 20mm Carb Kit for Z50 CRF50 XR50 CRF70](https://tboltusa.com/store/tbparts-race-head-88cc-big-bore-and-20mm-carb-kit-for-z50-crf50-xr50-crf70-p-883.md): part number `TBW0936`; $419.99 USD; in stock

Stock: "in stock" = 9 or more, a number = that many left, "out of stock" = cannot be ordered now. "options" = choose options on the product page before it can go in the cart. Product links go to the markdown copy; for the web page change the ending .md to .html.

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