Kick-start reliability matters on American dirt trails and track days alike. A sturdy kick start lever lets riders depend on a simple, sure-fire way to wake a four-stroke pit bike from idle, especially when electric systems fail or when quick practice starts are needed. The following five options are popular for a wide range of 50cc through 140cc Chinese pit bikes and dirt bikes, featuring common 13mm and some 16mm mounting holes. Each lever is designed to withstand rugged use, resist wear, and install with minimal tools. Use this guide to compare fitment, durability, and installation considerations before purchasing.
| Product | Brand | Fitment | Mounting Hole | Notes |
|---|---|---|---|---|
| Sthus Kick Start Lever | sthus | 90cc–140cc 4-stroke pit bikes | 13mm | Includes 1 lever; verify appearance and size against your bike before ordering. |
| MRELC Metal Kick Start Shaft | MRELC | 90cc–140cc 4-stroke pit bikes | 13mm | Overall length about 195mm; listed as 13mm mounting hole in features. |
| QAZAKY Kick Starter Shaft | QAZAKY | 50cc–150cc 4-stroke pit bikes and mini bikes | 13mm | Designed for many Chinese pit bikes; pedal ~55mm; overall length not always stated. |
| DJ-Motor CNC Kick Start Lever | DJ-Motor | 50cc–125cc pit bikes (DHZ, SSR, Stomp, Demon X, Braaap, Atomik, WPB) | 13mm | CNC kick start lever; also includes 11mm gear shifter lever. |
| PowerMotor Kick Start Lever | PowerMotor | 50cc–160cc pit bikes | 13mm | Length about 215mm; aluminum alloy build for durability. |
Sthus 13mm Kick Start Lever For Dirt Bikes
The Sthus kick start lever is designed for 90cc to 140cc four-stroke dirt bikes that use a 13mm kick start shaft. The lever package includes one kick start lever and is commonly used on many Chinese pit bikes. Prospective buyers should compare their bike’s shaft size, mounting geometry, and overall lever shape to the product listing before purchasing. The lever is built to handle frequent use in tough track conditions and casual trail riding alike. Installation typically requires basic hand tools and may benefit from a quick alignment check after initial starts.
Users should verify the alignment with their bike’s kick start shaft to ensure proper engagement and avoid wear on the mounting points. While robust enough for daily practice and trail riding, riders should inspect the lever and shaft for signs of wear after hard landings or frequent impacts. The design emphasizes compatibility with common 13mm shafts found on many pit bikes, making it a practical option for riders seeking a straightforward replacement that fits a broad range of Chinese-made bikes.
MRELC 13mm Kick Start Shaft
The MRELC lever is described as a 13mm kick start lever compatible with 90cc–140cc four-stroke pit bikes. The listed mounting hole is 13mm, with a pedal length around 55mm and an overall length near 195mm, reflecting a mid-length design that balances leverage with compactness. This lever uses a metal construction intended to withstand frequent use on dirt-and-dust environments. As with any aftermarket part, verify the mounting hole size and overall geometry against your bike’s kick start shaft and perch to ensure a secure, smooth operation during starts.
Riders should note that the product title also mentions a 16mm mounting option in some listings, while the features specify 13mm. This discrepancy highlights the importance of confirming the exact mounting hole size before purchase. If your bike uses a 13mm shaft, this MRELC lever can provide a reliable upgrade with a similar length to traditional levers, reducing the risk of misfit or binding during operation.
QAZAKY 13mm Kick Start Shaft
QAZAKY’s kick start shaft is pitched for 50cc–150cc pit bikes and mini bikes with a 4-stroke engine. The listing emphasizes broad compatibility with many 4-stroke engines and a wide range of brands commonly found in the American market and among enthusiasts who maintain older or budget bikes. The 13mm shaft size is a standard in many Chinese-made bikes, making this lever a practical replacement that fits a familiar form factor. Installation tends to be straightforward, requiring basic hand tools and careful alignment with the kick start perch to ensure smooth engagement and durable operation during repeated starts.
The product description notes compatibility with several models including Apollo RFZ, SSR, C70, XR50, XR100R, and various Z-series and Taotao mini bikes. Given this broad compatibility, buyers should check their bike’s specific mounting hole and lever geometry to confirm a precise match. The lever’s 13mm size supports reliable performance for riders who need a quick-start solution on a budget without sacrificing durability.
DJ-Motor 13mm CNC Kick Start Lever
The DJ-Motor lever features a 13mm CNC-machined kick start lever along with an 11mm gear shifter lever, designed for 50cc–125cc pit bikes such as DHZ, SSR, Stomp, Demon X, Braaap, Atomik, and WPB models. The CNC construction suggests tighter tolerances and a consistent finish, which can translate into smoother operation and longer life under dirt-and-dust conditions. This product’s larger family of compatible bikes makes it a versatile option for riders who own multiple bikes or who upgrade components on a similar platform. Inspect the lever’s mounting hole and overall reach to ensure a precise fit on your specific model.
When installing, confirm the 13mm mounting hole aligns with your kick start shaft and perch. While CNC machining offers enhanced precision, uneven grounds or improper alignment during setup can cause binding or premature wear. Regular inspection after initial use will help detect wear on the lever tip, pivot, or mounting points, ensuring dependable starts across riding sessions.
PowerMotor 13mm Kickstart Lever
The PowerMotor kickstart lever is described as a 13mm lever designed for 110cc–150cc pit bikes and similar engines. The lever is made from aluminum alloy steel, combining strength with lighter weight for easier operation and less fatigue during long practice sessions or races. The listed mounting hole is 13mm, and the overall length is about 215mm, offering a balanced reach that provides good leverage without excessive risk of overextension. The installation process is intended to be straightforward, with no welding or drilling required, making it a convenient upgrade for riders seeking a durable replacement lever.
Potential buyers should verify their bike’s mounting hole size and check for any compatibility notes related to the perch or kicker assembly. Aluminum alloy parts can be highly durable but may require periodic tightening of fasteners after riding on rough terrain. Regular inspection for wear and proper lubrication of the pivot area will extend the life of the lever and maintain consistent starting performance.
Buying Guide
Choosing the right dirt bike kick start lever involves evaluating fitment, durability, and ease of installation. Below are key purchase considerations and how they apply to the five products reviewed above.
- Fitment and mounting size: The majority of listed levers use a 13mm mounting hole, while one item shows a 16mm option. Always measure your bike’s kick start shaft and mounting hole before buying. A mismatch can cause binding, wear, or failure during starts.
- Lever length and leverage: Longer levers can provide more leverage but may require more space around the bike’s frame. Shorter levers save space but may require more effort to start the engine, particularly on larger displacement bikes.
- Material and durability: Aluminum and metal levers are common. CNC-machined levers typically offer tighter tolerances and smoother operation. Consider the riding conditions (dust, mud, and vibration) when evaluating durability and finish.
- Compatibility with bike models: Some levers target specific families of bikes (50cc–150cc, Chinese pit bikes, SSR/DHZ/Atomik families, etc.). Review model compatibility lists and user reviews to gauge real-world fit on bikes similar to yours.
- Installation and maintenance: Most aftermarket levers are designed for easy installation without welding or drilling. Check whether the perch, mounting bolts, and pedals require replacement or adjustment. Periodic inspection and lubrication help maintain performance over time.
- Replacement availability and warranty: Consider brands with an established seller presence and reasonable warranty expectations. Replacing a lever after a crash or while performing maintenance should be smooth and affordable.
- Cost-to-value balance: Different brands offer varying build quality and finishes. If you frequently ride in harsh conditions, prioritizing durability and fitment over the absolute lowest price can reduce downtime and replacement frequency.
| Product | Mounting Hole | Length (approx.) | Notes |
|---|---|---|---|
| Sthus Kick Start Lever | 13mm | 195mm | Solid all-around 90cc–140cc fitment; attractive balance of leverage and reach. |
| MRELC Kick Start Shaft | 13mm | 195mm | Listed as 13mm in features; some listings show 16mm in title—verify size. |
| QAZAKY Kick Start Shaft | 13mm | Not stated | Broad compatibility with 50cc–150cc bikes; verify pedal and overall length. |
| DJ-Motor CNC Kick Start Lever | 13mm | Not stated | CNC precision; includes 11mm gear shifter lever for broader kit compatibility. |
| PowerMotor Kick Start Lever | 13mm | ~215mm | Aluminum alloy; straightforward installation; durable for daily riding. |
In summary, for most American riders, a 13mm mounting hole lever will fit a wide range of older and newer Chinese pit bikes. If you own a bike with a 16mm hole or aren’t certain of your exact size, start by measuring the shaft diameter and consult the product’s fitment notes or the seller’s Q&A or reviews. When selecting, prioritize a lever that matches your bike’s length and lever geometry to avoid contact with the frame or exhaust components during knee flex or wheel travel. Finally, verify the replacement policy and warranty so you can count on reliable starts for many rides to come.