Engine Rebuilding

Rebuild History

The first dirt bike motor I rebuilt was a 1967 90cc Yamaha rotary valve 2-stroke. We lived in Japan on an Air Force base, I was 12, and the junior high taught motorcycle mechanics instead of auto classes. My teacher, Frank Gillespie, was an excellent rider and taught me how to ride and wrench. 45 years and thousands of rebuilds later, I’m still addicted, some say inflicted, in the field of engine rebuilding and dirt bikes. This experience is what rebuilds your motors. -Brent Kirk

4-STROKE Complete rebuild

Complete 4-stroke rebuilds are quoted on the high side with normal wear parts. These parts include a new Hotrod crankshaft assembly, main bearings, crank seals, cam chain, piston, rings, clips, pin, valves, gaskets, seals, and oil filter. We inspect the complete motor and transmission for needed repairs and will give a complete quote. Cylinder plating, guides, and seat replacements are not included in the quote prices below. Modifications and upgrades for speed and reliability can be customized to suite your needs.

 

Complete Engine Rebuild (labor & normal wear parts)

  • 150cc CRF $998
  • 250cc CR KX RM $1395
  • 250cc YZ / WR $1495
  • 450cc CR KX RM $1395
  • 450cc YZ / WR $1595
  • KTM 250 $1695
  • KTM 400 and up $1775
  • Pit Bike engines $795

Top End Rebuild Only (labor & normal wear parts)

  • 150cc CR $695
  • 250cc CR KX RM $795
  • 250cc YZ / WR $995
  • 450cc CR KX RM $849
  • 450cc YZ / WR $995
  • KTM 250 $1249
  • KTM 400 and up $1395
  • Pit Bike Engines $349
..

The prices above are average worse case scenario rebuild cost with most of the parts mentioned above and labor. This is with the engine out of the frame. A complete estimate and suggestions are made once the engine is torn down. Performance parts, porting and other engine modifications can be added and is usually a lot less expensive when done during the rebuild.

2-STROKE Complete rebuild

Complete 2-Stroke rebuilds are quoted on the high side with normal wear parts. These parts include a new Hotrod crankshaft assembly, main bearings, crank, seals, piston, rings, clips, pin, gaskets, seals, and spark plug. We inspect the complete motor and transmission for needed repairs and will give a complete quote. Cylinder plating, cylinder boring, or power valve parts, and needed rebuilding is not included in the estimate below. Modification and upgrades parts for speed and reliability can be customized to suit your needs. 

Complete Engine Rebuild (labor & normal wear parts)

  • 65cc $549.00
  • 85 – 100cc $595.00
  • 125cc $689.00
  • 250cc $769.00

Top End Rebuild Only (labor & normal wear parts)

  • 65cc $269.00
  • 85 – 100cc $299.00
  • 125cc $319.00
  • 250cc $359.00
..

The prices above are average rebuild costs. Includes normal wear parts and labor. Price is with engine out of the frame. A compete estimate and suggestions are made once the engine is torn down. Performance parts, porting and other engine modifications can be added and is usually less expensive when done during the rebuild. Parts figured in the complete rebuild are a crankshaft, main bearings and seals, piston kit, gaskets and spark plug. Top end rebuild parts are a piston kit and gaskets.

A complete estimate will be made upon engine dis-assembly. Parts other than normal wear items not mentioned in the prices will be replaced at additional cost upon your approval. Such as damaged cylinders that need re-plating, case damage, head damage, gears, forks and clutch parts. Parts that are not needed in the above estimates will reduce the price. These prices are calculated with the engine out of the frame. If you bring compete motorcycle the price about $150 more. In frame includes removing and reinstalling the engine, oil and coolant change, air filter service, general servicing as it relates to the engine, greasing the swing arm pivot and test drive.

Warranty: Due to the nature of and use of race engines most shops and re-builders do not offer a warranty of any kind. Racer’s E.R. offers a limited warranty that covers faulty workmanship for thirty days. Manufacturers can only warranty their part if it breaks. Engine damage and or seizure due to jetting, dirt or lack of oil or coolant are never covered. You must check you fluids before riding. Thoroughly break in and the test your engine within the thirty day period. If you have any problems, unexpected noises or concerns please call immediately.

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