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18T Manual Clutch Assembly for 50cc 70cc 90cc 110cc 125cc Pit Bike ATV
18T Manual Clutch Assembly for 50cc 70cc 90cc 110cc 125cc Pit Bike ATV
5.0 / 5.0
(16) 16 total reviews
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Product Overview
Restore reliable clutch engagement and power transfer with this 18-tooth manual clutch assembly, designed for select 50cc, 70cc, 90cc, 110cc, and 125cc 4-stroke horizontal engines commonly used on pit bikes, dirt bikes, youth ATVs, quads, and mini off-road bikes.
Built for manual clutch applications, this clutch assembly helps solve common issues such as clutch slipping, poor engagement, weak power transfer, worn friction plates, or a burnt-out factory clutch pack. The 18T drive gear is designed to match compatible manual clutch horizontal engines where the original clutch uses the same gear tooth count and dimensions.
Manufactured with a durable steel gear, reinforced clutch components, friction plates, and springs, this assembly is built for regular off-road use, trail riding, and small-displacement pit bike applications.
Product Compatibility
| Vehicle Type | Displacement Range | Common Brands |
| Pit Bikes / Dirt Bikes | 50cc, 70cc, 90cc, 110cc, 125cc | SSR, Apollo, Coolster, Piranha |
| Kids ATVs / Quads | 70cc – 125cc | TaoTao, Mountopz, Peace Sports |
| Engine Type | 4-Stroke Horizontal | Honda-Clone style (Loncin, Lifan, Zongshen) |
| Transmission | Manual | Standard gear-shift configurations |
Specifications
| Specification | Details |
|---|---|
| Part Type | Manual Clutch Assembly |
| Clutch Type | Manual / Hand-Actuated |
| Drive Gear | 18 Teeth / 18T |
| Engine Fitment | 50cc–125cc 4-Stroke Horizontal Engine |
| Vehicle Application | Pit Bike / Dirt Bike / ATV / Quad / Mini Bike |
| Material | Steel Gear with Friction Plates and Clutch Components |
| Transmission Type | Manual Clutch Gear-Shift Engines |
| Condition | 100% New Aftermarket |
| Fitment Type | Universal, measurement required |
| Installation | Professional installation recommended |
Key Features
- 18-Tooth Drive Gear – Designed for compatible horizontal engines using an 18T manual clutch gear setup.
- Manual Clutch Application – Built for hand-actuated manual clutch systems, not semi-automatic clutch engines.
- Reliable Power Transfer – Helps restore clutch bite, reduce slipping, and improve engagement when the original clutch is worn.
- Durable Internal Construction – Includes heavy-duty clutch components designed for small-displacement off-road use.
- Common Pit Bike Fitment – Suitable for many 50cc–125cc Chinese-style horizontal engines used in pit bikes, dirt bikes, ATVs, and quads.
- Replacement-Friendly Design – Intended to replace compatible worn clutch assemblies when the gear count and engine type match.
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Fitment FAQ
Will this part fit my specific model and year?
This clutch assembly is intended for Vehicle Type; Displacement Range; Common Brands; Pit Bikes / Dirt Bikes; 50cc, 70cc, 90cc, 110cc, 125cc; SSR, Apollo, Coolster, Piranha; Kids ATVs / Quads. Key physical/spec details from the product data include 18-Teeth (18T), 50cc, 125cc. 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 clutch assembly, also compare the spline count, clutch bell diameter, pulley diameter, spring style, belt width, and engine platform. This is especially important for 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 clutch assembly for machines outside the listed compatibility, or for units with different spline counts, clutch-bell sizes, pulley diameters, or engine platforms. 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 spline count, clutch bell diameter, pulley diameter, spring style, belt width, and engine platform. Recheck listed specs such as 18-Teeth (18T), 50cc, 125cc. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.
Replaced the clutch on my limo build with this, i didnt have my tuning quite right and found that this clutch grabs HARD, got a power surge in 2nd gear that almost threw me off the bike (gotta love suicide shifters)
good so far, easy to install
Great complete clutch kit, fit my Apollo 125 just fine. One thing to note was the nut to tighten the clutch down on the crank shaft was a larger thread diameter than my old one. I reused my old nut and everything worked out fine. Both nuts had to same OD and fit the same clutch tool so I'm not exactly sure what was going on.
Works great on my Chinese pitbike. Don't forget to buy the clutch socket though. It makes it a lot easier to disassemble and assemble.
Fit perfectly. No issues