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NCY Cylinder 58.5mm 161cc Big Bore Kit w/Cast Piston Fit 54mm (Buddy 125)

NCY Cylinder 58.5mm 161cc Big Bore Kit w/Cast Piston Fit 54mm (Buddy 125)

Description: NCY 58.5mm 161cc Cast-Iron Cylinder Kit with a Cast Aluminum Piston. Give your Buddy 125 based scooter some serious power with this bolt-on 161cc kit for most Buddy 125 engines. As far as we know, this is the only 58.5mm cylinder kit for the Buddy 125 engine that exists in the US. With most 58.5mm cylinder kits, you have to cut the engine cases in some way to make it fit (Outer Cylinder Skirt Diameter: 63mm). Not so with this kit (Outer Cylinder Skirt Diameter: 60.4mm)

It also has a lightweight cut-down piston to increase performance even more. It’s highly recommended to jet this kit significantly rich because of its high-performance capability. To maximize performance and efficiency, it’s recommended to get our 58.5mm big valve head as well. Some stock heads may not fit.

Make your Buddy 125 scream POWER! When you couple this cylinder kit with a Prima Buddy Exhaust, you gain 2.6 horsepower -- a 36% increase in power! Add NCY Cylinder Big Valve Head 61mm (Part# 1100-1283) and take it up to almost 45% more horsepower over stock! Keep going with a 26mm carb to take the power up even more. This kit is also available as part of our Stage 2 Buddy 125 Performance Kit.

NOTE: Please, measure with a caliper crankcase bore (opening) for 60.4mm cylinder outer diameter sleeve need a minimum of 60.6mm bore clearance or boring and machining are required.


Includes the following Cylinder, Piston + Rings, Gaskets (compression base gaskets, steel head gasket), Wrist pin, Circlips, and NCY Sticker.

•    1x Cast-Alumin Piston: 58.5mm
•    5x Piston Rings: 58.5mm
•    1x Wrist Pin w/G-clips: mm
•    1x Cast-Iron Cylinder: 58.5mm 
•    Outer Sleeve Diameter: 60.4mm
•    Cylinder Height (w/o sleeve): 68.8mm
•    Overall Height (w/sleeve): 90mm 
•    Made in Taiwan
•    Fit Cam Chain 45 (90) links
•    Fit Chain Guide (standard)
•    Fit Crankshaft 57.8mm +2.5mm
•    Fit Stud Set- 187mm 195mm
•    Fit Dowel Pin Set (10x14mm)
•    Fit 54mm Stud Spacing (A-Block)

•    Fit 54mm Cylinder Head 58.5mm to 61mm 2V
•    Fit Buddy 125cc+
•    Optional: cut plastic fan shroud for best fitment

Supported Models: Buddy 125

Item Weight & Package Dimensions:
•    2.869 pounds | 5.745" (L) x 5.125" (W) x 4.948" (H)

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NCY Cylinder 58.5mm 161cc Big Bore Kit w/Cast Piston Fit 54mm (Buddy 125)
  • Stock: 20
  • Reward Points: 7
  • Part #: 1100-1287
Sold: 1
Views: 10956
Price in reward points: 189