# Big Bore and Stroker Kits

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- **Breadcrumbs:** [Home](https://tboltusa.com/store/index.md) > [Pit Bike Engine Parts](https://tboltusa.com/store/pit-bike-engine-parts-c-51.md) > Big Bore and Stroker Kits
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- **Generated:** 2026-11-06 07:13 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?c=24`

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

- [AIR FILTER OUTERWEARS](https://tboltusa.com/store/pit-bike-engine-parts-air-filter-outerwears-c-51_1110.md)
- [Air Filters](https://tboltusa.com/store/pit-bike-engine-parts-air-filters-c-51_519.md)
- [BATTERY](https://tboltusa.com/store/pit-bike-engine-parts-battery-c-51_1116.md)
- [Camshafts](https://tboltusa.com/store/pit-bike-engine-parts-camshafts-c-51_52.md)
- [Carb Intakes](https://tboltusa.com/store/pit-bike-engine-parts-carb-intakes-c-51_527.md)
- [Carb Kits & Throttle Cables](https://tboltusa.com/store/pit-bike-engine-parts-carb-kits-throttle-cables-c-51_38.md)
- [Carbs and Jets](https://tboltusa.com/store/pit-bike-engine-parts-carbs-and-jets-c-51_528.md)
- [Chinese 50-110cc Performance](https://tboltusa.com/store/pit-bike-engine-parts-chinese-50-110cc-performance-c-51_37.md)
- [Clutch Kits](https://tboltusa.com/store/pit-bike-engine-parts-clutch-kits-c-51_67.md)
- [Crankshafts](https://tboltusa.com/store/pit-bike-engine-parts-crankshafts-c-51_109.md)
- [Cylinder Heads & Parts](https://tboltusa.com/store/pit-bike-engine-parts-cylinder-heads-parts-c-51_110.md)
- [Cylinders](https://tboltusa.com/store/pit-bike-engine-parts-cylinders-c-51_111.md)
- [Daytona Anima 150/190 4V Performance parts](https://tboltusa.com/store/pit-bike-engine-parts-daytona-anima-150190-4v-performance-parts-c-51_535.md)
- [Daytona 190FE 5 speed E start](https://tboltusa.com/store/pit-bike-engine-parts-daytona-190fe-speed-start-c-51_1152.md)
- [Daytona Anima 150 and 190 4V O.E.M. Parts](https://tboltusa.com/store/pit-bike-engine-parts-daytona-anima-150-and-190-4v-oem-parts-c-51_928.md)
- [Electrical](https://tboltusa.com/store/pit-bike-engine-parts-electrical-c-51_143.md)
- [Engine Covers & Engine Parts](https://tboltusa.com/store/pit-bike-engine-parts-engine-covers-engine-parts-c-51_514.md)
- [Exhaust Pipes](https://tboltusa.com/store/pit-bike-engine-parts-exhaust-pipes-c-51_31.md)
- [Gaskets & Seals](https://tboltusa.com/store/pit-bike-engine-parts-gaskets-seals-c-51_785.md)
- [GPX YX 124 & 140 Parts and Kits](https://tboltusa.com/store/pit-bike-engine-parts-gpx-yx-124-140-parts-and-kits-c-51_29.md)
- [KAYO SSR 170 Engine parts](https://tboltusa.com/store/pit-bike-engine-parts-kayo-ssr-170-engine-parts-c-51_1104.md)
- [Lifan Kits](https://tboltusa.com/store/pit-bike-engine-parts-lifan-kits-c-51_102.md)
- [Lubes, Oils & Chemicals](https://tboltusa.com/store/pit-bike-engine-parts-lubes-oils-chemicals-c-51_58.md)
- [Oil Coolers & Oil Filters](https://tboltusa.com/store/pit-bike-engine-parts-oil-coolers-oil-filters-c-51_61.md)
- [Parts & Kits ZS 155cc & YX150/160](https://tboltusa.com/store/pit-bike-engine-parts-parts-kits-zs-155cc-yx150160-c-51_105.md)
- [Piston Kits](https://tboltusa.com/store/pit-bike-engine-parts-piston-kits-c-51_96.md)
- [Shop tools](https://tboltusa.com/store/pit-bike-engine-parts-shop-tools-c-51_142.md)
- [SPARK PLUG](https://tboltusa.com/store/pit-bike-engine-parts-spark-plug-c-51_1117.md)
- [YX 140 E-START PARTS](https://tboltusa.com/store/pit-bike-engine-parts-yx-140-start-parts-c-51_1115.md)
- [ZS190 & ZS212 Parts](https://tboltusa.com/store/pit-bike-engine-parts-zs190-zs212-parts-c-51_1094.md)
- [Hardware](https://tboltusa.com/store/pit-bike-engine-parts-hardware-c-51_906.md)

## Products

Showing 1 to 23 of 23 products (page 1 of 1).

- [TBParts - 88cc Big Bore Kit fits Honda XR70/CRF70 Engines](https://tboltusa.com/store/tbparts-88cc-big-bore-kit-fits-honda-xr70crf70-engines-p-32.md): part number `TBW0929`; $149.99 USD; in stock
- [TBParts - Roller Rocker Race Head V2 146cc Big Bore Kit China 120 & 125cc engines](https://tboltusa.com/store/tbparts-roller-rocker-race-head-v2-146cc-big-bore-kit-china-120-125cc-engines-p-55.md): part number `TBW9127`; $599.99 USD; out of stock
- [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
- [212cc Big Bore Kit for Daytona 190](https://tboltusa.com/store/212cc-big-bore-kit-for-daytona-190-p-10714.md): part number `WHS-3294`; $299.00 USD (sale, was $419.99 USD); 4 left
- [212cc Big Bore Piston for Daytona 190](https://tboltusa.com/store/212cc-big-bore-piston-for-daytona-190-p-10989.md): part number `WHS-3297-D`; $75.00 USD; 5 left
- [212cc Big Bore Piston Ring Set for Daytona 190](https://tboltusa.com/store/212cc-big-bore-piston-ring-set-for-daytona-190-p-10901.md): part number `WHS-3296`; $49.95 USD; 2 left
- [Daytona 212cc Piston Kit with Anti-Friction Coating](https://tboltusa.com/store/daytona-212cc-piston-kit-with-anti-friction-coating-p-12235.md): part number `TRC-1682`; $99.99 USD; in stock
- [Daytona 4-Valve Complete Head](https://tboltusa.com/store/daytona-valve-complete-head-p-11520.md): part number `TBW1752`; $499.99 USD; 1 left
- [Daytona 4V Head and 212cc Bore Kit](https://tboltusa.com/store/daytona-4v-head-and-212cc-bore-kit-p-11521.md): part number `TBW9376`; $699.00 USD; 3 left
- [Kawasaki - 1st Gear for KLX110](https://tboltusa.com/store/kawasaki-1st-gear-for-klx110-p-5259.md): part number `13260-1862`; $77.58 USD; 3 left
- [Kawasaki - 2nd Gear for KLX110](https://tboltusa.com/store/kawasaki-2nd-gear-for-klx110-p-5489.md): part number `13260-1986`; $30.56 USD; 4 left
- [Kawasaki - One Way Clutch for KLX110](https://tboltusa.com/store/kawasaki-one-way-clutch-for-klx110-p-11217.md): part number `13193-0008`; $103.59 USD; 5 left
- [Kawasaki - One Way Clutch for KLX110L](https://tboltusa.com/store/kawasaki-one-way-clutch-for-klx110l-p-12492.md): part number `13194-0013`; $107.99 USD; in stock
- [TBParts - 114cc Bore Kit w/ Race Head GPX Pitster YX Piranha Lifan](https://tboltusa.com/store/tbparts-114cc-bore-kit-race-head-gpx-pitster-yx-piranha-lifan-p-361.md): part number `TBW9096`; $592.99 USD; 5 left
- [TBParts - 170cc to 184cc Bore Kit and Nibbi 28mm Carb Kit for the YX/GPX/Zongshen engines](https://tboltusa.com/store/tbparts-170cc-to-184cc-bore-kit-and-nibbi-28mm-carb-kit-for-the-yxgpxzongshen-engines-p-2289.md): part number `TBW9041`; $379.99 USD; out of stock
- [TBparts - 55mm 138cc Big Bore Kit for Honda CRF125](https://tboltusa.com/store/tbparts-55mm-138cc-big-bore-kit-for-honda-crf125-p-12326.md): part number `TBW9374`; $199.99 USD; 2 left
- [TBparts - High Volume Oil Pump Z50 CRF50 XR50 CT70 XR70 CRF70 82-Present](https://tboltusa.com/store/tbparts-high-volume-oil-pump-z50-crf50-xr50-ct70-xr70-crf70-82-present-p-100.md): part number `TBW0226-12V`; $28.99 USD; 2 left
- [TBParts - Race Head Kit for 88cc For Z50 CRF50 XR50 & Pit bikes](https://tboltusa.com/store/tbparts-race-head-kit-for-88cc-for-z50-crf50-xr50-pit-bikes-p-45.md): part number `TBW0934`; $264.99 USD; in 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
- [TBParts - Stroker kit 1 108cc for Z50 CRF50 XR50 CRF70](https://tboltusa.com/store/tbparts-stroker-kit-108cc-for-z50-crf50-xr50-crf70-p-43.md): part number `TBW0966`; $189.99 USD; 4 left
- [TBParts - Stroker kit 2 108cc for Z50 CRF50 XR50 CRF70](https://tboltusa.com/store/tbparts-stroker-kit-108cc-for-z50-crf50-xr50-crf70-p-268.md): part number `TBW0967`; $352.99 USD; 4 left
- [TBParts - Stroker kit 3 108cc with Race Head for Z50 CRF50 XR50 CRF70](https://tboltusa.com/store/tbparts-stroker-kit-108cc-with-race-head-for-z50-crf50-xr50-crf70-p-269.md): part number `TBW0968`; $612.99 USD; 4 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

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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