# Z50 K0-78 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 K0-78](https://tboltusa.com/store/tb-parts-z50-k0-78-c-68_1063.md) > Z50 K0-78 Big Bore and stroker kits
- **Web page:** [this page on tboltusa.com](https://tboltusa.com/store/z50-k0-78-z50-k0-78-big-bore-and-stroker-kits-c-68_1063_1070.html)
- **Markdown:** [this page as markdown](https://tboltusa.com/store/z50-k0-78-z50-k0-78-big-bore-and-stroker-kits-c-68_1063_1070.md)
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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 K0-78 Shifter Kicker throttle lever](https://tboltusa.com/store/z50-k0-78-z50-k0-78-shifter-kicker-throttle-lever-c-68_1063_1075.md)
- [Z50 K0-78 Carb Kits and parts](https://tboltusa.com/store/z50-k0-78-z50-k0-78-carb-kits-and-parts-c-68_1063_1072.md)
- [Z50 K0-78 Chassis parts](https://tboltusa.com/store/z50-k0-78-z50-k0-78-chassis-parts-c-68_1063_72.md)
- [Z50 K0-78 Electrical](https://tboltusa.com/store/z50-k0-78-z50-k0-78-electrical-c-68_1063_1073.md)
- [Z50 K0-78 Engine and clutch Parts](https://tboltusa.com/store/z50-k0-78-z50-k0-78-engine-and-clutch-parts-c-68_1063_1071.md)
- [Z50 K0-78 Exhaust](https://tboltusa.com/store/z50-k0-78-z50-k0-78-exhaust-c-68_1063_1069.md)

## Products

Showing 1 to 9 of 9 products (page 1 of 1).

- [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
- [Vintage Honda 88cc Race Head big bore Kit Z50 K1-78](https://tboltusa.com/store/vintage-honda-88cc-race-head-big-bore-kit-z50-k1-78-p-1427.md): part number `TBW0939-Z50K178`; $419.99 USD; out of stock
- [TBParts - 108 Stroker Crank Upgrade Kit for 69-79 Z50](https://tboltusa.com/store/tbparts-108-stroker-crank-upgrade-kit-for-69-79-z50-p-10034.md): part number `TBW9090`; $229.99 USD; 2 left
- [TBParts - Vintage Honda 108cc Stroker big bore & Nibbi 24mm Carb kit 69-81 Z50](https://tboltusa.com/store/tbparts-vintage-honda-108cc-stroker-big-bore-nibbi-24mm-carb-kit-69-81-z50-p-2634.md): part number `TBW9092-69-81Z50`; $579.99 USD; out of stock
- [TBParts - Vintage Honda 108cc Stroker big bore & VM26 Carb kit 69-81 Z50](https://tboltusa.com/store/tbparts-vintage-honda-108cc-stroker-big-bore-vm26-carb-kit-69-81-z50-p-2626.md): part number `TBW9094-69-81Z50`; $629.99 USD; out of stock
- [TBParts - Vintage Honda 88cc big bore & Carb kit Z50 K0-81](https://tboltusa.com/store/tbparts-vintage-honda-88cc-big-bore-carb-kit-z50-k0-81-p-1425.md): part number `TBW0932-Z50K0-81`; $262.99 USD; 2 left
- [TBParts - Vintage Honda 88cc big bore Kit Z50 69-81](https://tboltusa.com/store/tbparts-vintage-honda-88cc-big-bore-kit-z50-69-81-p-1426.md): part number `TBW0925-Z5069-81`; $149.99 USD; 2 left
- [TBParts - Vintage Race Head V2 108cc Big Bore Kit and Stroker Crank Z50 69-81 CT70 3 speed 69-](https://tboltusa.com/store/tbparts-vintage-race-head-v2-108cc-big-bore-kit-and-stroker-crank-z50-69-81-ct70-speed-69-p-48.md): part number `TBW9110`; $729.99 USD; 2 left
- [TBParts - Vintage Roller Rocker Race Head V2 108cc Big Bore w/ Mikuni VM26 69-81 Z50 CT70 and 73-80 ATC 70 3 speed](https://tboltusa.com/store/tbparts-vintage-roller-rocker-race-head-v2-108cc-big-bore-mikuni-vm26-69-81-z50-ct70-and-73-80-atc-70-speed-p-2095.md): part number `TBW9119`; $902.99 USD; 2 left

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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