# TBParts - 713 51mm Stroker crank for 4 speed Honda CT70H SL/XL70 & ATC70 6v Motors (some 3 speed)

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## Summary

- **Part number:** TBW0713
- **Price:** $199.99 USD
- **Stock:** 1 left.
- **Product id:** 2622
- **Product last changed:** 2026-05-04

## 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.

- [Pit Bike Engine Parts > Crankshafts](https://tboltusa.com/store/pit-bike-engine-parts-crankshafts-c-51_109.md)

Where a fitment line says "All", it means all years of the model named on that line, not all bikes.

## Notes the store shows with this product

**\*\*\*MUST RUN TBW0225 OIL PUMP WITH THIS CRANK\*\*\*\***
For proper clearance.
Stock oil pump shaft is to large in diameter.
TBW0225 oil pump drive shaft is a smaller diameter than stock and therefore, the stroker crank clears it.

## Description (the store's own text)

TB 713 51mm Stroker crank for 4 speed Honda<br>CT70H SL/XL70 & ATC70 6v Motors (some 3 speed)

**Application:**

- ALL 4 speed Honda CT70H SL/XL70
- 80-81 3 speed CT70
- 81-85 ATC70

Turns 88cc into 108cc
Must use modern 12v type piston & Vintage 6v High volume oil pump tbw0225 with this crank for proper clearance

Measure 64mm from gear to the end.

## 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 - 713 51mm Stroker crank for 4 speed Honda CT70H SL/XL70 & ATC70 6v Motors (some 3 speed)](https://tboltusa.com/store/tbparts-713-51mm-stroker-crank-for-speed-honda-ct70h-slxl70-atc70-6v-motors-some-speed-p-2622.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.

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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/2622/tbparts-713-51mm-stroker-crank-for-speed-honda-ct70h-slxl70-atc70-6v-motors-some-1.jpg)
- [Photo 2](https://tboltusa.com/store/img/p/2622/tbparts-713-51mm-stroker-crank-for-speed-honda-ct70h-slxl70-atc70-6v-motors-some-2.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.