GOOFIT
40mm Cylinder Rebuild Kit for 2-Stroke 47cc 49cc Pocket Bike Mini Quad & Chainsaw
40mm Cylinder Rebuild Kit for 2-Stroke 47cc 49cc Pocket Bike Mini Quad & Chainsaw
5.0 / 5.0
(3) 3 total reviews
Couldn't load pickup availability
Product Overview
Restore the compression and power of your 2-stroke engine with the GOOFIT 40mm Cylinder Rebuild Kit. This versatile top-end kit is designed for 47cc and 49cc engines found in pocket bikes, mini quads, and even high-performance chainsaws. Precision-engineered for a perfect seal, it includes everything you need—from the cylinder body to the gaskets—to get your equipment back in peak running condition.
Product Compatibility
This 40mm bore kit is a universal fit for many 2-stroke small engines. Please verify your bolt hole spacing (50mm) before purchasing.
| Vehicle/Equipment Type | Common Applications | Engine Match |
| Pocket Bikes | Mini Gas Scooters, Super Bikes | 2-Stroke 47cc / 49cc |
| Off-Road Mini | Mini Quads, ATVs, Dirt Bikes | 40mm Piston / 10mm Pin |
| Power Tools | High-performance Chain Saws | Compatible 2-Stroke Motors |
Specifications
| Attribute | Details |
| Cylinder Bore | 40mm |
| Piston Pin Diameter | 10mm |
| Exhaust Bolt Spacing | 40mm |
| Cylinder Bolt Spacing | 50mm |
| Engine Type | 2-Stroke (47cc / 49cc) |
| Package Includes | Cylinder, Piston, Rings, Gaskets, Clips, Stud |
Key Features
- Universal 2-Stroke Fitment: Optimized for 47cc and 49cc engines, making it the ideal replacement for pocket bikes, mini ATVs, and compatible outdoor power equipment like chainsaws.
- Precision 40mm Bore: High-quality cylinder lining ensures a consistent seal and smooth piston movement, restoring lost compression and engine response.
- Complete Top-End Solution: This all-in-one package includes the cylinder body, piston, rings, 10mm pin, clips, and essential gaskets for a leak-proof installation.
- Durable Construction: Built with heat-resistant alloys to handle the high temperatures of air-cooled 2-stroke engines, extending the lifespan of your machine.
- Direct Bolt-On Design: Features standard 50mm bolt spacing and 40mm exhaust spacing for a straightforward replacement process without modifications.
Share
Fitment FAQ
Will this part fit my specific model and year?
This cylinder piston kit is intended for This 40mm bore kit is a universal fit for many 2-stroke small engines. Please verify your bolt hole spacing (50mm) before purchasing.; Vehicle/Equipment Type; Common Applications; Engine Match; Pocket Bikes; Mini Gas Scooters, Super Bikes; 2-Stroke 47cc / 49cc. Key physical/spec details from the product data include This 40mm bore kit is a universal fit for many 2-stroke small engines. Please verify your bolt hole spacing (50mm) before purchasing., 40mm Piston / 10mm Pin, Cylinder Bore: 40mm. Use the compatibility table and product photos together before ordering.
Do I need to match the OEM part number?
Yes. If your original part has a stamped OEM or manufacturer number, match that number first before ordering. For this cylinder piston kit, also compare the bore diameter, piston-pin size, gasket pattern, stud spacing, engine code, stroke type, and cylinder height.
What models or situations does this part not fit?
Do not order this cylinder piston kit for machines outside the listed compatibility, or for units with different bore sizes, piston-pin diameters, stroke lengths, stud spacing, or gasket patterns. Do not rely only on the model name or engine size.
What should I check before ordering?
Before ordering, compare your original part with the photos and check the bore diameter, piston-pin size, gasket pattern, stud spacing, engine code, stroke type, and cylinder height. Recheck listed specs such as This 40mm bore kit is a universal fit for many 2-stroke small engines. Please verify your bolt hole spacing (50mm) before purchasing., 40mm Piston / 10mm Pin, Cylinder Bore: 40mm. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.
Bought for a 49cc ETon 4 wheeler. Had to do some adjusting but overall it worked.
Everything was as described and my bike runs great now.
Very well made product. Delivered in a resanable amount of time. Over all well worth the price. The only down side is it’s for a 43cc motor at most. Super small piston and cylinder. Defiantly not even close to 47cc or 49cc motors.