Package Includes:
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YAMAHA Cylinder Body x1
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YAMAHA Cylinder Upper Gasket x1
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YAMAHA Cylinder Lower Gasket x1
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YAMAHA Piston x1
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YAMAHA Piston Ring Set x1
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YAMAHA Piston Pin x1
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YAMAHA C-Clip x2
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YAMAHA Decompression / Pressure Reducer x1
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YAMAHA Decompression Cam x1
Optional Add-ons (Recommended for 125cc upgrades):
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YAMAHA 155cc Camshaft Assembly
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YAMAHA 155cc Fuel Injector
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YAMAHA Valve Stem Seal (Set of 4)
Vehicle Compatibility:
Fits all YAMAHA B8R engine series:
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Cygnus Gryphus 125 (2020-Present)
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ZUMA 125 / BWS 125 (2020+ Global / 2022+ US Models)
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Force 2.0 155 (All years)
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Augur 155 (All years)
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NMAX 155 (B8R platform)
Important Notes:
1) Required Parts for 125cc Models: When upgrading a Cygnus Gryphus 125 or ZUMA 125 to 155cc, you must also replace the camshaft and fuel injector with YAMAHA 155cc specification parts for proper operation.
2) ECU & Throttle Body Compatibility: Upgrading this kit does NOT require replacing your ECU or throttle body. The stock B8R 125cc ECU and throttle body are fully shared and compatible with 155cc models.
3) Manufacturing Origin Difference: Both versions meet genuine YAMAHA OEM standards:
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Made in Taiwan: Higher precision manufacturing and superior durability.
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Made in Indonesia: Standard OEM quality, ideal as a cost-effective replacement.