# Engine Parts

> This is a plain-text (markdown) copy of a page on tboltusa.com, made for AI assistants. People see the same page at the HTML link below.

- **Breadcrumbs:** [Home](https://tboltusa.com/store/index.md) > [Honda Vintage Mini Bike Parts](https://tboltusa.com/store/honda-vintage-mini-bike-parts-c-101.md) > [Z50 K0-K2 HARDTAIL](https://tboltusa.com/store/honda-vintage-mini-bike-parts-z50-k0-k2-hardtail-c-101_1123.md) > Engine Parts
- **Web page:** [this page on tboltusa.com](https://tboltusa.com/store/z50-k0-k2-hardtail-engine-parts-c-101_1123_1130.html)
- **Markdown:** [this page as markdown](https://tboltusa.com/store/z50-k0-k2-hardtail-engine-parts-c-101_1123_1130.md)
- **Generated:** 2026-11-07 12:38 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?c=1130`

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

- [Bars and Controls](https://tboltusa.com/store/z50-k0-k2-hardtail-bars-and-controls-c-101_1123_1124.md)
- [Big Bore and Engine Kits](https://tboltusa.com/store/z50-k0-k2-hardtail-big-bore-and-engine-kits-c-101_1123_1125.md)
- [Brake Pads and Parts](https://tboltusa.com/store/z50-k0-k2-hardtail-brake-pads-and-parts-c-101_1123_1126.md)
- [Carbs and Kits](https://tboltusa.com/store/z50-k0-k2-hardtail-carbs-and-kits-c-101_1123_1127.md)
- [Clutch Kits and Parts](https://tboltusa.com/store/z50-k0-k2-hardtail-clutch-kits-and-parts-c-101_1123_1128.md)
- [Electrical](https://tboltusa.com/store/z50-k0-k2-hardtail-electrical-c-101_1123_1131.md)
- [Engine Covers and Dress up parts](https://tboltusa.com/store/z50-k0-k2-hardtail-engine-covers-and-dress-up-parts-c-101_1123_1129.md)
- [Exhaust](https://tboltusa.com/store/z50-k0-k2-hardtail-exhaust-c-101_1123_1132.md)
- [Frame](https://tboltusa.com/store/z50-k0-k2-hardtail-frame-c-101_1123_1135.md)
- [Front Forks](https://tboltusa.com/store/z50-k0-k2-hardtail-front-forks-c-101_1123_1134.md)
- [Pegs and Mounts](https://tboltusa.com/store/z50-k0-k2-hardtail-pegs-and-mounts-c-101_1123_1137.md)
- [Seats and Tanks](https://tboltusa.com/store/z50-k0-k2-hardtail-seats-and-tanks-c-101_1123_1133.md)
- [Sprockets and Chains](https://tboltusa.com/store/z50-k0-k2-hardtail-sprockets-and-chains-c-101_1123_1138.md)
- [Wheels and Tires](https://tboltusa.com/store/z50-k0-k2-hardtail-wheels-and-tires-c-101_1123_1136.md)

## Products

Showing 1 to 10 of 10 products (page 1 of 1).

- [TBParts - 889 Piston Z50 K0-81 Standard Bore Replacement](https://tboltusa.com/store/tbparts-889-piston-z50-k0-81-standard-bore-replacement-p-4964.md): part number `TBW0889`; $22.99 USD; 2 left
- [Piranha - Black Anodized Drain Bolt for Pitbikes](https://tboltusa.com/store/piranha-black-anodized-drain-bolt-for-pitbikes-p-11557.md): part number `WHS-3443-D`; $10.49 USD; 1 left
- [Piranha - Magnetic Drain Bolt for Pitbikes](https://tboltusa.com/store/piranha-magnetic-drain-bolt-for-pitbikes-p-11556.md): part number `WHS-1243`; $10.49 USD; out of stock
- [TBParts - 1011 Piston Z50 K0-81 0.5mm Oversized](https://tboltusa.com/store/tbparts-1011-piston-z50-k0-81-05mm-oversized-p-5172.md): part number `TBW1011`; $21.99 USD; 1 left
- [TBParts - 50cc Gasket Set Z50 CRF50 XR50 & Pit bikes](https://tboltusa.com/store/tbparts-50cc-gasket-set-z50-crf50-xr50-pit-bikes-p-2349.md): part number `TBW0216`; $13.99 USD; 3 left
- [TBParts - High Volume Oil Pump CT70 Z50 ATC70 TRX70 SL/XL70 Vintage](https://tboltusa.com/store/tbparts-high-volume-oil-pump-ct70-z50-atc70-trx70-slxl70-vintage-p-1380.md): part number `TBW0225-6V`; $33.99 USD; 2 left
- [TBParts - Honda 50/70 Chain Roller Guide Kit](https://tboltusa.com/store/tbparts-honda-5070-chain-roller-guide-kit-p-2030.md): part number `TBW1006`; $13.99 USD; 4 left
- [TBParts - Magnetic Oil Drain Bolt - XR50 CRF50 CRF70 KLX110 & Pit Bikes](https://tboltusa.com/store/tbparts-magnetic-oil-drain-bolt-xr50-crf50-crf70-klx110-pit-bikes-p-271.md): part number `TBW0341`; $6.99 USD; in stock
- [TBparts - Oil seal and O-ring Kit for CT70, Z50, XR/CRF 50/70 and China 50-160cc](https://tboltusa.com/store/tbparts-oil-seal-and-ring-kit-for-ct70-z50-xrcrf-5070-and-china-50-160cc-p-2130.md): part number `TBW1028-0291`; $15.00 USD; 8 left
- [TBparts - Oil Seal Kit Z50 CRF50 XR50 CT70 & Pit bikes](https://tboltusa.com/store/tbparts-oil-seal-kit-z50-crf50-xr50-ct70-pit-bikes-p-964.md): part number `TBW0291`; $10.99 USD; 5 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.

## Navigate

- Up one level: [Z50 K0-K2 HARDTAIL](https://tboltusa.com/store/honda-vintage-mini-bike-parts-z50-k0-k2-hardtail-c-101_1123.md)
- [Home](https://tboltusa.com/store/index.md)
- Search address: `https://tboltusa.com/store/search.md?keywords=YOUR+WORDS`