• 70cc 90cc 110cc Cylinder Valve Rebuild Kit for Chinese 4-Stroke ATV Dirt Bike - goofitmoto
  • 70cc 90cc 110cc Cylinder Valve Rebuild Kit for Chinese 4-Stroke ATV Dirt Bike - goofitmoto
  • 70cc 90cc 110cc Cylinder Valve Rebuild Kit for Chinese 4-Stroke ATV Dirt Bike - goofitmoto
  • 70cc 90cc 110cc Cylinder Valve Rebuild Kit for Chinese 4-Stroke ATV Dirt Bike - goofitmoto
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70cc 90cc 110cc Cylinder Valve Rebuild Kit for Chinese 4-Stroke ATV Dirt Bike

70cc 90cc 110cc Cylinder Valve Rebuild Kit for Chinese 4-Stroke ATV Dirt Bike

$9.99
$9.99
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Product Overview

Restore your engine's compression and performance with this comprehensive Cylinder Valve Rebuild Kit. Specifically designed for 4-stroke horizontal engines ranging from 70cc to 110cc, this all-in-one kit provides every component needed to refresh your cylinder head. From high-temp resistant valves to precision stem seals, this kit ensures a perfect seal and smooth valve train operation for your Chinese-manufactured ATV, Pit Bike, or Go Kart.

Product Compatibility

This kit is universal for most Chinese 4-Stroke Horizontal Air-Cooled Engines.

Vehicle Type Popular Compatible Brands
ATV / Quad TaoTao, Sunl, Buyang, Coolsport, Kazuma, Peace Sports
Dirt Bike / Pit Bike SSR, Apollo, Piranha, Baja, X-Pro, Motovox
Go Kart / Buggy Kandi, Yerf-Dog, Roketa, Coleman

Fits 70cc, 90cc, and 110cc horizontal engines. Please verify your valve length and diameter against the specifications below before ordering.

Specifications

Feature Intake Valve Exhaust Valve
Engine Cycle 4-Stroke 4-Stroke
Outer Diameter (OD) 23mm (0.90") 20mm (0.78")
Valve Length 66mm (2.59") 65mm (2.55")
Stem Shaft Diameter 5mm (0.19") 5mm (0.19")
Engine Style Horizontal Horizontal

Key Features

  • Complete Rebuild Solution: Includes valves, dual springs (inner/outer), stem seals, seats, retainers, and cotter clips—everything needed for a full head service.
  • Dual Spring Design: Features high-tension inner and outer valve springs to prevent valve float at high RPMs.
  • Premium Stem Seals: High-quality rubber seals prevent oil from entering the combustion chamber, eliminating blue exhaust smoke.
  • Extreme Heat Durability: Constructed from high-grade alloys to withstand the intense thermal stress of air-cooled off-road engines.
  • OEM Precision: Manufactured to exact factory specifications for Chinese 110cc-class engines, ensuring consistent valve timing and power.
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Fitment FAQ

Will this part fit my specific model and year?

This cylinder piston kit is intended for This kit is universal for most Chinese 4-Stroke Horizontal Air-Cooled Engines .; Vehicle Type; Popular Compatible Brands; ATV / Quad; TaoTao, Sunl, Buyang, Coolsport, Kazuma, Peace Sports; Dirt Bike / Pit Bike; SSR, Apollo, Piranha, Baja, X-Pro, Motovox. Key physical/spec details from the product data include Outer Diameter (OD): 23mm (0.90"), Valve Length: 66mm (2.59"), Stem Shaft Diameter: 5mm (0.19"). 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. This is especially important for Baja/TaoTao/SSR models because similar model names can use different parts by year or trim.

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 Outer Diameter (OD): 23mm (0.90"), Valve Length: 66mm (2.59"), Stem Shaft Diameter: 5mm (0.19"). If any connector, mounting point, size, or year detail is different, confirm fitment before installation.