Whether upgrading an older machine or equipping a new ride for rugged trails, a reliable kick start lever is essential. This guide highlights five widely compatible levers designed for 50cc to 140cc four-stroke dirt bikes and pit bikes. Each entry lists mounting hole size, overall length, and key compatibility to help you choose a lever that fits your model and riding style.
| Product | Mounting Hole | Overall Length | Compatibility |
|---|---|---|---|
| MRELC Kick Start Shaft | 13mm | 195mm | 90cc–140cc 4-stroke Pit Dirt Bike |
| Sthus 13mm Kick Start Lever | 13mm | 195mm | 90cc–140cc 4-stroke Pit/Dirt Bike |
| LIYYDS Kick Start Lever (Yamaha PW80) | 13mm | 220mm | Yamaha PW80/PY80 and similar 125cc SSR/CRF50 XR50 XR100R family |
| DJ-Motor CNC Kick Start Lever | 13mm | Not specified | 50cc–125cc Pit/Dirt Bikes |
| OTOHANS PW50 Kick Start Lever | Not specified | 156mm | Yamaha PW50 Peewee |
MRELC Kick Start Lever For 90-140cc Bikes
Key specifications emphasize a 13mm mounting hole and a compact overall length of 195mm. The pedal length is 55mm, enabling a comfortable position for riders. The lever is designed to work with 90cc, 110cc, 125cc, and 140cc four-stroke pit bikes, making it a versatile upgrade for many popular models. The metal construction supports durability in rugged off-road use.
- Mounting hole: 13mm
- Pedal length: 55mm
- Overall length: 195mm
- Compatibility: 90cc–140cc 4-stroke Pit Dirt Bike
Sthus 13mm Kick Start Lever For 90-140cc Dirt Bikes
This lever is sized for 13mm shafts and offers a 195mm overall length, matching many 90cc to 140cc four-stroke pit bikes. The package typically includes one Kick Start lever. It’s designed for most Chinese pit dirt bikes with 13mm shafts, and buyers are advised to compare appearance, size, and shape with their existing lever before ordering.
- Fit: 90cc–140cc 4-stroke bikes
- Mounting hole: 13mm
- Overall length: 195mm
- Package: 1 Kick Start lever
LIYYDS Kick Start Lever For Yamaha PW80 And More
The LIYYDS lever is designed for a broad range of small-displacement bikes, featuring a 13mm mounting hole and a 13mm shaft interface. It lists compatibility with Yamaha PW80 PY80, Apollo RFZ 125, SSR 125 XC18, and several CRF/XR/Bore family models, including XR50 and XR100R variants. The overall length is 220mm, with a pedal length around 55mm, combining reach and leverage for easier starts on compact bikes.
- Mounting hole: 13mm
- Pedal length: 55mm
- Overall length: 220mm
- Compatibility: Yamaha PW80 PY80, Apollo RFZ 125, SSR 125 XC18, CRF50 XR50 XR100R, and more
DJ-Motor CNC Kick Start Lever For 50cc-125cc Bikes
This model offers a 13mm CNC kick start lever and an 11mm gear shifter lever. It is positioned for a broad range of bikes from 50cc through 125cc pit dirt bikes, including DHZ, SSR Stomp, Demon X, Braaap, Atomik, WPB, and similar brands. The blue finish provides a distinct look, and the product emphasizes CNC manufacturing for durability and precision. The listing notes fitment across multiple small-displacement platforms.
- Product color: Blue
- Kick start lever: 13mm
- Gear shifter lever: 11mm
- Fits: 50cc–125cc Pit Dirt Bikes
OTOHANS PW50 Kick Start Lever For Yamaha Peewee 50
Designed specifically for the Yamaha PW50 Peewee, this lever is sized to suit the small-displacement bike. Product specs note a width of approximately 88mm and a length around 156mm, making it a compact upgrade choice for youth and mini dirt bikes. This lever focuses on simplicity and compatibility with PW50 family models.
- Compatibility: Yamaha PW50 (Peewee)
- Width: ~88mm
- Length: ~156mm
Buying Guide
When selecting a kick start lever, fitment and durability are key. Start by confirming the shaft diameter and mounting hole size matches your bike. Most of the levers listed here use a 13mm mounting hole, though a few models may vary or omit the hole size in the listing. Length and pedal size affect leverage and foot position, so choose a lever that provides comfortable operation without interference with the frame or footpegs.
Fitment And Shaft Size
Identify whether your bike uses a 13mm, 16mm, or other shaft diameter. While many 90cc–140cc four-stroke pit bikes adopt a 13mm mounting hole, some models or aftermarket parts may differ. Measure your current lever or consult your manual to ensure the new lever will fit properly. Incorrect fit can lead to gear contact, poor starting performance, or hardware loosening during use.
Durability And Material
Material quality matters for off-road reliability. Metal levers with robust finishing resist bending and corrosion under mud, water, and grit. Consider overall length and pedal dimensions to ensure comfortable operation across long rides without striking shifters, foot pegs, or the rider’s boot during aggressive kicks.
Installation Considerations
Some listings include a lever only, others include mounting bolts or hardware. Check what’s included to avoid missing parts during installation. If you ride in harsh conditions, a lever with a durable finish and corrosion resistance will maintain performance longer and reduce maintenance needs.