# BBR - Super Stock Swingarm for CRF50 and XR50

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- **Breadcrumbs:** [Home](https://tboltusa.com/store/index.md) > [Japanese Mini Bike Parts](https://tboltusa.com/store/japanese-mini-bike-parts-c-100.md) > [CRF50 Z50 & XR50](https://tboltusa.com/store/japanese-mini-bike-parts-crf50-z50-xr50-c-100_122.md) > [Frames & Swingarms](https://tboltusa.com/store/crf50-z50-xr50-frames-swingarms-c-100_122_507.md) > BBR - Super Stock Swingarm for CRF50 and XR50
- **Web page:** [this page on tboltusa.com](https://tboltusa.com/store/bbr-super-stock-swingarm-for-crf50-and-xr50-p-2021.html)
- **Markdown:** [this page as markdown](https://tboltusa.com/store/bbr-super-stock-swingarm-for-crf50-and-xr50-p-2021.md)
- **Generated:** 2026-11-01 23:52 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?p=2021`

All prices are in US dollars (USD). Shipping and any tax are worked out at checkout.

## Summary

- **Part number:** 330-HXR-5131
- **Price:** $599.95 USD (before options)
- **Stock:** 1 left.
- **Product id:** 2021
- **Product last changed:** 2025-06-25

## Options

This product has options. Pick one value for every option. A value marked +$X adds that amount to the price; -$X takes it off.

### Shipping

The "Shipping" option is this heavy item's own flat shipping fee; it is added to the item.

- Flat Rate: +$20.00: `choice/8-26`

## 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.

- [Japanese Mini Bike Parts > CRF50 Z50 & XR50 > Frames & Swingarms](https://tboltusa.com/store/crf50-z50-xr50-frames-swingarms-c-100_122_507.md)

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

## Description (the store's own text)

BBR's Super Stock Swingarm is burly enough to handle today's pit bike racer. Constructed of heat treated 6061 T6 aluminum with billet drop-outs and shock mount. It is lengthened 2 1/4". Includes stainless steel bushings and needle bearings. Accepts 12" rear wheel.

**Key Features:**

- 6061 T6 Aluminum
- Tig welded construction
- 2 1/4" longer than stock
- Needle bearing pivots
- Fits 10" or 12" rear wheel

**Kit Includes:**

- Chain guide
- Brake rod extension

**Note:** Takes CRF50 type chain guides like 345-HXR-5011

## 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.
- This item ships with its own flat fee: $20.00 USD.
- 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 [BBR - Super Stock Swingarm for CRF50 and XR50](https://tboltusa.com/store/bbr-super-stock-swingarm-for-crf50-and-xr50-p-2021.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.

For an AI assistant building a cart: `https://tboltusa.com/cart/new/item/2021/choice/8-26/qty/1` starts one with this product (the first value of every option, qty 1), `https://tboltusa.com/cart/<cart_code>/add/item/2021/choice/8-26/qty/1` adds it to a cart you already started, and `https://tboltusa.com/cart/<cart_code>/zip/<ZIP>` gives the shipping options to a US ZIP code. They answer JSON: give your customer the newest `cart_link`, a public cart link, safe to share.

To choose other values, swap in a `choice/` piece from the Options above; `qty/` sets the quantity. More products: add more `item/...` parts.

Or give the person one link that fills their own cart when they open it (a public cart link, safe to share; the first value of every option, qty 1): [Put BBR - Super Stock Swingarm for CRF50 and XR50 in my cart](https://tboltusa.com/cart/open/item/2021/choice/8-26/qty/1)

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/2021/bbr-super-stock-swingarm-for-crf50-and-xr50-1.png)

## 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.