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69mm Cylinder Rebuild Kit for GY6 100cc 49-50cc Scooter Engine — Open-Box, 39% Off
Brand: GOIRTUTSS
Condition: Used
$4598
$7499
-39% Save $2901
Updated: 6 days ago
Description
This Cylinder Rebuild Kit is fitment for GY6 49CC, 50CC, 139QMB engines in motorcycles, scooters, ATVs, and karts. It upgrades 50CC/60CC/80CC engines to 100CC, significantly enhancing RPM, power, and top speed. No EGR system required.
Core Components Includes:50mm cylinder body kit,69mm valve cylinder head assembly,Camshaft and camshaft seat kit,Full gasket set,Oil pump and gears,Spring set, pure copper roller assembly,6-pin racing AC CDI, ignition coil, and 3-electrode spark plug etc.
Valve materials:Exhaust valve use 53Cr21Mn9N94N high-strength steel，Intake valve use 40Cr10Si2Mo alloy steel.
Automated machining + plasma surfacing technology for wear resistance, high-temperature strength, and airtight durability.
Installation Tips:Ensure piston markings face upward during installation, with the 6mm small hole facing away from the engine.
This Cylinder Rebuild Kit is fitment for GY6 49CC, 50CC, 139QMB engines in motorcycles, scooters, ATVs, and karts. It upgrades 50CC/60CC/80CC engines to 100CC, significantly enhancing RPM, power, and top speed. No EGR system required.
Core Components Includes:50mm cylinder body kit,69mm valve cylinder head assembly,Camshaft and camshaft seat kit,Full gasket set,Oil pump and gears,Spring set, pure copper roller assembly,6-pin racing AC CDI, ignition coil, and 3-electrode spark plug.
Valve materials:Exhaust valve use 53Cr21Mn9N94N high-strength steel，Intake valve use 40Cr10Si2Mo alloy steel.
Automated machining + plasma surfacing technology for wear resistance, high-temperature strength, and airtight durability.
Installation Tips:Ensure piston markings face upward during installation, with the 6mm small hole facing away from the engine.
Core Components Includes:50mm cylinder body kit,69mm valve cylinder head assembly,Camshaft and camshaft seat kit,Full gasket set,Oil pump and gears,Spring set, pure copper roller assembly,6-pin racing AC CDI, ignition coil, and 3-electrode spark plug.
Valve materials:Exhaust valve use 53Cr21Mn9N94N high-strength steel，Intake valve use 40Cr10Si2Mo alloy steel.
Automated machining + plasma surfacing technology for wear resistance, high-temperature strength, and airtight durability.
Installation Tips:Ensure piston markings face upward during installation, with the 6mm small hole facing away from the engine.
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Product Details
- SKU:
- awhd-us-b0bpy94n44
- Model:
- AMJX-MB2189
- Country:
- US
- ASIN:
- B0BPY94N44
Shopping Smarter
Common questions about buying open-box and refurbished.
Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $29 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
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