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SSR - 125cc Semi-Auto Engine (USA Only)

Vital Information
Part No A01324-09-00
Stock Level 1 Left
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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!


Displacement 124cc
Engine Type Air Cooled, Single-Cylinder, 2-valve, 4-stroke
Final Drive Chain
Fuel Delivery N/A
Fuel Unleaded / 91 Octane
Recommended Engine Oil 10W-40 Petroleum Based (Nonsynthetic)
Kick Start Yes
Electric Start No
Auxiliary Output Yes
Transmission 4-Speed Semi Auto (Four Up)
Shift-Pattern Four-speed Transmission: N-1-2-3-4
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


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!

Available Options:

Carb and Electrical:

Exhaust Gasket:


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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!

We have all necessary support parts on hand.

Most orders ship same, or next business day, unless otherwise noted above.