# SSR - 125cc Semi-Auto Engine (USA Only) > 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) > [Engines](https://tboltusa.com/store/engines-c-114.md) > [All Horizontal Pit Bike Engines](https://tboltusa.com/store/engines-all-horizontal-pit-bike-engines-c-114_1034.md) > SSR - 125cc Semi-Auto Engine (USA Only) - **Web page:** [this page on tboltusa.com](https://tboltusa.com/store/ssr-125cc-semi-auto-engine-usa-only-p-2424.html) - **Markdown:** [this page as markdown](https://tboltusa.com/store/ssr-125cc-semi-auto-engine-usa-only-p-2424.md) - **Generated:** 2026-11-04 12:04 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=2424` All prices are in US dollars (USD). Shipping and any tax are worked out at checkout. ## Summary - **Part number:** A01324-09-00 - **Price:** $449.00 USD (before options) - **Stock:** 5 left. - **Product id:** 2424 - **Product last changed:** 2026-03-09 ## Options This product has options. Pick one value for every option. A value marked +$X adds that amount to the price; -$X takes it off. ### Carb and Electrical - None: no price change: `choice/102-774` - Carb and Electrical: +$109.00: `choice/102-775` ### Exhaust Gasket - None: no price change: `choice/101-773` - COPPER TYPE TRC-1189: +$2.99: `choice/101-772` ### Shipping The "Shipping" option is this heavy item's own flat shipping fee; it is added to the item. - Flat Rate: +$95.00: `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. - [Engines > All Horizontal Pit Bike Engines](https://tboltusa.com/store/engines-all-horizontal-pit-bike-engines-c-114_1034.md) - [Engines > SSR Engines](https://tboltusa.com/store/engines-ssr-engines-c-114_517.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) This is a great replacement engine at a reasonable cost. It is a bare engine, so it only includes the pieces shown in the picture. We have an optional carb and electrical kit available below. Great for project builds too! Engine - Displacement: 124cc - Engine Type: Air Cooled, Single-Cylinder, 2-valve, 4-stroke - Bore/Stroke - Final Drive: Chain - Fuel Delivery: N/A - Fuel: Unleaded / 91 Octane - Recommended Engine Oil: 10W-40 Petroleum Based (Nonsynthetic) Ignition - Kick Start: Yes - Electric Start: No - CDI: No - Auxiliary Output: Yes Transmission - Transmission: 4-Speed Semi Auto (Four Up) - Shift-Pattern: Four-speed Transmission: N-1-2-3-4 - Clutch: Semi-auto no clutch **Additional carb and electrical option includes:** - WHS-0957 - Mikuni 22mm carburetor - TRC-0116 - Wiring harness - TRC-0082 - Standard CDI - TRC-0410 - Ignition coil **Note:** When upgrading your Honda XR 50/70, or CRF 50/70 to this engine you may want to use an aftermarket footpeg mount and a tank spacer kit. Also we suggest using an aftermarket exhaust to obtain maximum performance. All of these items are available at TBoltUSA.com. Feel free to contact us about any additional parts needed for your build, we most likely have it readily available! ## 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: $95.00 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 [SSR - 125cc Semi-Auto Engine (USA Only)](https://tboltusa.com/store/ssr-125cc-semi-auto-engine-usa-only-p-2424.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/2424/choice/102-774/choice/101-773/choice/8-26/qty/1` starts one with this product (the first value of every option, qty 1), `https://tboltusa.com/cart//add/item/2424/choice/102-774/choice/101-773/choice/8-26/qty/1` adds it to a cart you already started, and `https://tboltusa.com/cart//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 SSR - 125cc Semi-Auto Engine (USA Only) in my cart](https://tboltusa.com/cart/open/item/2424/choice/102-774/choice/101-773/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/2424/ssr-125cc-semi-auto-engine-usa-only-1.jpg) - [Photo 2](https://tboltusa.com/store/img/p/2424/ssr-125cc-semi-auto-engine-usa-only-2.jpg) - [Photo 3](https://tboltusa.com/store/img/p/2424/ssr-125cc-semi-auto-engine-usa-only-3.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.