1
Compatible with Lifan 125cc horizontal engines.
Designed for 52.4mm bore size.
High-quality replacement for durability and performance.
Intake valve size: 33mm for optimal airflow.
Exhaust valve size: 26mm for efficient exhaust flow.
Easy installation with 50mm bolt hole spacing.
Corrosion-resistant for long-lasting use.
Average Rating out of 5:
Price Range: $75.99
2
Adjustable for engine cylinders 2"-6.5" diameter.
Durable steel construction ensures long-lasting use.
220 grit stones effectively remove carbon and rust.
Easy stone replacement for convenient maintenance.
Knurled wheel adjusts spring pressure for optimal performance.
Suitable for automotive, motorcycle, and industrial applications.
Compact design for easy storage and transportation.
Average Rating out of 5:
Price Range: $19.99
3
Compatible with 1976-1999 Mercury/Mariner outboards.
Fits 90-200HP 6-cylinder 2-stroke engines.
Replaces part numbers 134-6456, 96455A9, 68162A5.
Check your model or S/N for compatibility.
Customer support available for model inquiries.
Includes a one-year product warranty.
Technical consultation for installation provided.
Average Rating out of 5:
Price Range: $74.00
Material: Plastic
4
Perfect for PW50 models 1981-2022
High-quality materials for durability and reliability
Drop-in replacement for old or damaged parts
Easy installation with basic tools required
Comprehensive kit includes all necessary components
Enhances performance and extends engine life
Professional installation recommended for best results
Average Rating out of 5:
Price Range: $22.55
5
Compatible with Yamaha PW50 models from 1981-2023.
Includes cylinder, head, piston, and necessary components.
OEM part numbers ensure perfect fit and compatibility.
High-quality steel cylinder for durability and performance.
Cylinder bore and stroke: 44.00mm x 39.20mm.
Comes with head gasket and base gasket included.
NGK spark plug included for reliable ignition.
Average Rating out of 5:
Price Range: $89.95
6
Genuine Kawasaki Part # 99999-0627
Complete assembly for easy installation
Includes valves, guides, and springs
Compatible with multiple Kawasaki engine models
Comes with essential gaskets and seals
Designed for optimal performance and reliability
Ideal for FR, FS, and FX series engines
Average Rating out of 5:
Price Range: $312.63
7
Compatible with GY6 50CC to 80CC scooters.
Made from high-quality aluminum material.
Includes cylinder head and gasket set.
Features 80CC high lift performance valves.
Enhances overall performance of your scooter.
Easy installation for DIY enthusiasts.
Perfect upgrade for various scooter brands.
Average Rating out of 5:
Price Range: $74.99
8
Fully assembled for quick and easy installation.
Includes all necessary components for rebuilding.
Compatible with Honda GX160 and many power equipment.
Precision feeler gauges for valve clearance adjustment.
High-quality replacement for Honda 163cc engines.
Replaces multiple Honda part numbers seamlessly.
Ideal for generators, water pumps, and pressure washers.
Average Rating out of 5:
Price Range: $42.95
9
Chrome finish enhances your motorcycle's appearance.
Fits multiple Harley Davidson models from 2002-2006.
Elegantly covers transmission top to rear cylinder area.
Complements oil line cover and transmission shroud.
Easy installation for a custom look.
Durable construction ensures long-lasting performance.
Customer support available for any inquiries.
Average Rating out of 5:
Price Range: $19.99
10
High-quality 50cc cylinder head assembly.
Compatible with GY6 139QMB engine models.
Includes valve cover gasket for easy installation.
Non-EGR style for improved performance.
Fits various scooter brands and models.
Durable construction for long-lasting use.
Enhances engine efficiency and reliability.
Average Rating out of 5:
Price Range: $10.99
11
Fits GY6 engines from 50cc to 110cc.
Includes cylinder head and cylinder block assembly.
Valve length of 69mm for optimal performance.
Compatible with various scooters and ATVs.
50mm bore diameter for enhanced engine efficiency.
Check pictures before purchasing for compatibility.
Easy installation for quick upgrades and repairs.
Average Rating out of 5:
Price Range: $62.88
12
Fits Honda Rancher 350 TRX350 models 2000-2006.
Includes essential components for complete replacement.
Direct fit for hassle-free installation process.
Compatible with multiple part numbers listed.
Quality materials ensure reliable performance and durability.
Comes with all necessary gaskets and filters.
Check compatibility before purchasing to ensure fit.
Price Range: $135.01
13
Includes 61mm big bore cylinder kit.
Compatible with GY6 125cc, 150cc, 157QMJ engines.
Non-EGR cylinder head for enhanced performance.
Piston pin outer diameter: 15mm.
Intake valve diameter: 28mm, length 66mm.
Exhaust valve diameter: 23mm, length 65.5mm.
May require crankcase machining for installation.
Average Rating out of 5:
Price Range: $61.99
14
Durable aluminum construction for long-lasting performance.
Designed for Polaris Ranger 900 Crew models.
Precision laser cut for accurate fit.
Includes all necessary hardware for installation.
Improves camshaft timing for optimal engine performance.
Easy installation with straightforward instructions.
Compatible with multiple Polaris Ranger models.
Average Rating out of 5:
Price Range: $21.26
15
High-performance 49cc to 100cc cylinder head.
Compatible with GY6 139QMB and 139QMA engines.
Includes fully assembled head with valves set.
Non-EGR design for improved efficiency.
Intake valve diameter of 18.5mm.
Exhaust valve diameter measures 16mm.
Combustion chamber diameter of 50mm.
Average Rating out of 5:
Price Range: $25.99
16
High-quality replacement for Mercury outboard triggers.
Compatible with multiple Mercury models and part numbers.
Easy to install for quick functionality.
1-year warranty for peace of mind.
Customer support available within 24 hours.
Durable design ensures long-lasting performance.
Check compatibility before purchasing for best fit.
Average Rating out of 5:
Price Range: $48.95
Material: Polyvinyl Chloride (PVC), Copper
17
Compatible with GY6 49cc to 100cc engines.
Includes fully assembled 50mm cylinder head.
High-quality aluminum for durability and longevity.
Enhanced performance with improved valve size and porting.
Complete package includes head, bolts, and gasket kit.
Features strong power and stable performance.
Non EGR type for optimized engine efficiency.
Price Range: $27.99
18
High-quality replacement cylinder head for GY6 engines.
Compatible with 49cc and 50cc scooters and ATVs.
Durable construction with rustproof and corrosion-resistant materials.
Excellent heat dissipation for reliable performance.
Valve length of 64mm; verify before ordering.
Easy installation with a 50mm mounting hole distance.
Customer satisfaction guaranteed with available support.
Average Rating out of 5:
Price Range: $24.99
Color: Cylinder Heads
19
Compatible with multiple Polaris models.
Replaces OEM part number 3085541.
Durable aluminum cylinder construction.
Ideal for 1989-2006 Polaris ATVs.
No sleeve coating for optimal performance.
Easy installation for DIY enthusiasts.
Enhances engine efficiency and power.
Average Rating out of 5:
Price Range: $119.95
20
Fits GY6 125cc, 150cc, 155cc engines. High performance for improved engine efficiency. Includes cylinder head, bolts, gasket, spark plug. Durable design for long-lasting use. Excellent heat dissipation and oil saving. Compatible with various Chinese scooters and ATVs. Not an EGR head; no EGR port.
Average Rating out of 5:
Price Range: $29.99
21
High-quality alloy steel construction for durability.
Designed for GY6 engine and compatible vehicles.
M6 hexagon screw for secure fastening.
Lightweight at only 8 grams.
Precise dimensions ensure perfect fit.
Ideal for various engine applications.
Includes special 8 mm socket wrench requirement.
Average Rating out of 5:
Price Range: $15.99
22
39mm cylinder head piston engine kit replacement.
Compatible with Honda XR50, Z50R, CRF50 models.
Includes cylinder head, body, and head gaskets.
Complete kit with piston, rings, and wrist pins.
Not compatible with 1978 and earlier Z50A.
Engineered for exceptional service life and durability.
Verify parts against pictures for proper fitment.
Average Rating out of 5:
Price Range: $48.25
23
High-quality replacement O-rings for durability.
Compatible with Honda motorcycles models listed.
Includes 2 pieces for complete replacement.
Part numbers: 91310-MB0-003, 91310-KE8-000.
Easy installation for quick repairs.
New condition ensures reliable performance.
Customer support available within 24 hours.
Average Rating out of 5:
Price Range: $11.90
Color: Black
Material: Fluorocarbon
24
Compatible with various Polaris RZR models.
Includes hardware for easy installation.
Laser cut from durable aluminum material.
Precision engineering for reliable performance.
Lightweight design enhances handling and performance.
Designed for long-lasting durability and strength.
Improves camshaft timing accuracy and efficiency.
Average Rating out of 5:
Price Range: $17.99
25
Compatible with 66cc and 80cc engines.
100% CNC machined from high-grade aluminum.
Includes cylinder head kit and gasket.
Enhances cooling and compression efficiency.
Durable materials for long-lasting performance.
Eye-catching design with vibrant colors.
Verify compatibility before ordering for best fit.
Price Range: $28.99
Color: Blue
26
Genuine Kawasaki Part # 99999-0624
Assembled cylinder head kit for easy installation
Includes valves, guides, keepers, and springs
Fits FX751V, FX801V, FX850V engines
Contains essential gaskets and seals
Cylinder #1 located near the flywheel
Durable construction for long-lasting performance
Average Rating out of 5:
Price Range: $349.89
27
Compatible with 66cc and 80cc engines.
CNC machined for precision and durability.
High-grade aluminum construction ensures lightweight performance.
Enhanced design improves engine cooling efficiency.
Increases engine compression for better performance.
Package includes one CNC cylinder head.
Diameter of 118mm, height of 47mm.
Average Rating out of 5:
Price Range: $33.99
Color: silver
28
Compatible with 139QMB and 139QMA engines.
Includes 69mm length valves for optimal performance.
Non EGR type, no EGR port included.
47mm combustion chamber for efficient combustion.
Intake valve diameter of 18.5mm.
Exhaust valve diameter of 16mm.
Fully assembled for easy installation.
Average Rating out of 5:
Price Range: $25.99
29
Upgrade from 125cc/150cc to 180cc performance
Includes cylinder head, valves, and full parts kit
Requires machine work for crank case modification
Boost power with 61mm big bore cylinder
Compatible with Chinese scooters, ATVs, and go-karts
Perfect for motorcycle maintenance and upgrades
High-quality components for reliable performance
Average Rating out of 5:
Price Range: $59.97
