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Two-Stroke Single-Cylinder Crankshaft Rebuilding Service

Sale price $185.00

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he Ultimate in Two-Stroke Reliability and Precision.

Two Strokes Only offers this precision crank rebuilding service to ensure your engine's bottom end can reliably handle the horsepower unlocked by our porting work, or any engine you want running at peak performance! The crankshaft is the foundation of your two-stroke engine—its precision directly impacts vibration, longevity, and overall performance.

Applicable Engines:

  • This service is for labor only on any two-stroke, single-cylinder crankshaft (e.g., CR500, KX500, YZ250, etc.).

KPR Crank Rebuilding Labor Includes:

  • Disassembly of your existing crankshaft assembly.
  • Thorough cleaning and inspection of all parts.
  • Professional installation of your new rod kit (rod, pin, bearings, and washers).
  • Expert truing and indexing of the crank halves to ensure zero runout.

IMPORTANT: How The Crank Rebuild Service Works

Please read this section carefully, as parts are billed separately from the labor charge.

Step 1: Purchase Labor Now

  • Purchase this listing to secure the specialized for your single-cylinder crank.

Step 2: Parts Consultation

  • Immediately after your purchase, a representative from Two-Strokes Only will contact you to determine your specific needs.
  • We will ask for your engine model, and together we will decide on the appropriate new Rod Kit (e.g., OEM, Hot Rods, Wiseco, etc.).
  • You will be quoted and invoiced separately for the cost of the Rod Kit 

Step 3: Shipping & Service

  • Once the parts invoice is paid, we will provide you with the shipping address to send your existing crank assembly.
  • We will perform the rebuild, truing, and balancing.
  • Your perfectly rebuilt crank will be shipped back to you, ready for reinstallation.

Note: This service is for professional labor only. It does not include the cost of parts (rod kit, main bearings, seals, etc.). If you wish to supply your own new rod kit, please notify us during the consultation phase.

Compatibility

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Customer Reviews

Overall rating: 4.9 / 5 from 58 reviews.

Customer photo review of 1987-2004 Kawasaki KX500 Shift Fork Kit

Shipping was fast, the product is great! When you could still buy the shift forks from Kawasaki they came out of spec :-( These are in spec and far better quality than Kawi's forks. They are in the bike and vastly improved the shifting on this KX500 BEAST!!! Thanks Luke!

1987-2004 Kawasaki KX500 Shift Fork Kit

Customer photo review of 2017-2025 Honda CRF450r/CRF250r Billet Gas Cap

Unfortunately, the gas cap got scratched during shipping, but after a few friendly emails, the problem was resolved perfectly for both sides. Friendly service, quick solutions, absolutely reliable Top-notch shop👍

2017-2025 Honda CRF450r/CRF250r Billet Gas Cap

Customer photo review of 1988-2004 KX500 Billet Engine Cases

Amazing!!! Luke is so helpful. These cases are amazing and a direct fit of my old cases. All parts are equally made and not one is below my standards

1988-2004 KX500 Billet Engine Cases

The best machined pieces I have ever seen. I have wanted a two piece KX500 billet side cover for a long time and can't wait to install it. So trick!

1986-2004 KX500 Two-Piece Billet Side Cover

Very quick shipping, and super pleased with the quality of this stator cover! The anodized black blends nicely with the satin black powder coat on my KX500 engine.

1983+ KX500 Billet Stator Cover- Kawasaki Logo

Quality parts!!! Very happy with what I received for the money!! Fit and finish is top tier. Also happy to support a company who is helping keep these two strokes alive! I will be back for more parts soon!

Billet Rear Silencer Bracket | KX500 & KX250

Bearings were a perfect fit. A couple of shaft bearings were on back order, which I reicieved shortly after a majority of my orders arrived. Quality of everything is immaculate I would certainly do business with Luke again. I honestly wish I could have purchased the billet cases for my kx500af build after seeing the precision on the covers and head. Highly recommend TSO

1986-2004 Kawasaki KX500 Complete Engine Bearing Kit

I ordered the case saver for my 98 kx250, the price of the TSO case saver was very close to the same as the original kawasaki one. The difference is huge, The TSO case saver is made of stainless steel for extra strength and great looks. Shipping and customer service was very fast and included mounting hardware. First time I ordered from TSO, but it won't be my last. Thanks TSO for offering a quality part and great customer service!

1992–2004 KX250 Case Saver| 316 Stainless Steel

So the cylinder head is immaculate and performs perfectly with the decompression valve. Much much easier to start this 500cc 2 stroke. I just wish I the decompression valve was coming off the side instead of straight out the top. Decompression valve creates interference taking out the spark plug when everything is mounted and the bike is together. Purchased a new wrench to remove the spark plug and all is ok. Overall happy 😁

1989-2004 Kawasaki KX500 Billet Cylinder Head Kit

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