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MiniGP & PitBike Engine Rebuild Services
Complete Rebuild 2 Stroke
Complete Engine Rebuild
Starts at $880 (Labor)
Note: Please make sure to power wash the engine before shipping and drain the oil/coolant.
Includes
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Full disassembly of the engine
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Thorough cleaning of all parts
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Inspection of all components to ensure compliance with manufacturer specifications
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Detailed engine report provided
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Exact cost estimate
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Replacement of all gaskets, O-rings, copper/aluminum washers, and oil seals
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Replacement of all necessary springs, screws, woodruff keys, lock washers, dowel pins, and circlips
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Replacing the Crankshaft Main Bearings
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Crankshaft Rounout check
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Honing of all gasket mating surfaces
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Setting of ring end gap
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Setting of static ignition timing
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Cylinder honing/deglazing
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Full engine reassembly using manufacturer torque specifications
Optional (Labor)
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Bearing Replacement - $40 per pair
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Thread/Broken Bolt Repair - 20 - $60 per thread/bolt
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Race Preparation - Please contact us
Top End 2 Stroke
Top End Rebuild
Starts at $380 (Labor)
Note: Please make sure to power wash the engine before shipping and drain the oil/coolant.
Includes
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Disassembly of Top End
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Inspection of the entire Top End Assembly
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Setting of Ring End Gap
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Assembly of Top End
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Checking the Ignition Timing (static)
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Cylinder Honing/Deglazing
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Hone the Cylinder Gasket Surface
Optional (Labor)
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Thread/Broken Bolt Repair $20 - $60 per thread/bolt
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Cylinder Boring Starts at $160 (for overbore $40/mm)
Please note that we do not perform partial rebuilds (e.g., top-end only) on motors that we did not originally build. Our policy requires that any used motor not previously built by Motomonk undergo a full rebuild.
This approach ensures that we have a complete understanding of the engine’s condition and history, allowing us to establish a reliable baseline for future maintenance.
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