Best Swing Arm Accessories for Mini Bikes and Pit Bikes
Finding the right swing arm is essential for improving suspension travel, stability, and overall handling on small dirt bikes and pit bikes. The following selection highlights strong, durable options designed for 10″ to 12″ wheels and a range of engine displacements from 50cc to 150cc. Each product is chosen for compatibility with popular mini bike models, robust construction, and performance-ready features. Use this guide to compare options and identify a swing arm that best fits your bike, riding style, and maintenance plans.
Summary Table
| Product | Brand | Wheel Size Fit | Engine Range | Key Fit Notes |
|---|---|---|---|---|
| Dirt Pit Bike Steel Swing Arm | YLQYYH | 12″ and 14″ | 70-125cc | CRF style, rear disc brake type |
| Kemblawolf Heavy Duty Swing Arm | Kemblawolf | 10″ | 50cc-125cc | Universal 10″ wheel compatibility, robust iron build |
| 450mm Rear Swing Arm 12mm Axle | YC Yier | 12″ | 70cc-125cc | SSR, Apollo, Taotao, Coolster style compatibility |
| WPHMOTO Aluminum Swing Arm | WPHMOTO | 10″ | 50cc-125cc | Disc brake compatible, triangle design |
| 490mm Swing Arm | 91.SCS | Unknown (fits 110-125/140-150cc bikes typically) | 110-150cc | Check shape/size before purchase |
Dirt Pit Bike Steel Swing Arm For 70-125cc Bikes
Designed for CRF-style frames, this swing arm from YLQYYH supports 70-125cc dirt pit bikes and is compatible with 12″ and 14″ tires. It’s built to work with rear disc brakes, delivering reliable performance under demanding off-road riding conditions. The steel construction focuses on strength and durability to withstand rocky terrain and hard landings.
Kemblawolf Heavy Duty Triangle Swing Arm
This heavy-duty swing arm from Kemblawolf is built for 10″ wheels and a wide range of pit and dirt bikes from 50cc to 125cc. The iron construction emphasizes durability and stability, making it suitable for rugged off-road use. Its broad compatibility helps riders upgrade or replace a worn swing arm across multiple mini bike models.
Heavy-Duty Go Kart Swing Arm With Spools
Although marketed for go-kart and ATV setups, this heavy-duty 400mm swing arm can fit 30″ rear differential axle configurations and is sold with spools. Its robust steel construction and corrosion-resistant finish make it a viable option for riders who also maintain wider vehicle setups or want a strong, versatile rear suspension component for light off-road use.
YC Yier 450mm Rear Swing Arm 12mm Axle
This 450mm rear swing arm by YC Yier is designed for 12″ wheels and fits 70cc-125cc dirt pit bikes. The design targets SSR, Apollo, Taotao, CRF50, and Coolster variants, offering a straightforward upgrade to rear suspension performance for popular mini bike models without extensive customization.
WPHMOTO Aluminum Swing Arm For 10″ Wheels
This triangle-configured aluminum swing arm from WPHMOTO is tailored for 10″ wheels, covering 50cc to 125cc dirt pit bikes with disc brakes. The aluminum construction offers a lighter weight alternative while maintaining strength for off-road riding. It emphasizes compatibility with SSR and CRF50/XR50 configurations common on small-bore pit bikes.
490mm Swing Arm For 110cc to 140cc Pit Bikes
Marketed by 91.SCS, this 490mm swing arm targets larger pit bikes with engine displacement in the 110cc to 140cc range. The listing notes that buyers should verify shape and size before purchase to ensure proper fit. It’s a straightforward option for riders seeking extended rear suspension length on compatible builds.
Buying Guide: Key Purchase Considerations
- Wheel compatibility: Confirm wheel size (10″, 12″, or 14″) and axle diameter (commonly 10mm or 12mm) to ensure a proper fit for your bike’s rear hub and brake system.
- Engine displacement compatibility: Match swing arm compatibility with your engine size (50cc-125cc is common for mini bikes, while larger options exist for bigger pit bikes).
- Brake type compatibility: Check whether the swing arm supports rear disc brakes or drum brakes as required by your bike’s braking system.
- Material and durability: Steel and iron constructions offer strength and durability, while aluminum provides lighter weight with good rigidity. Consider riding terrain and maintenance needs.
- Overall length and geometry: Ensure the swing arm length aligns with your frame geometry to preserve suspension travel, chain alignment, and tire clearance.
- Brand and model fitment: Some swing arms list specific compatible models (CRF50, XR50, SSR, Apollo, Coolster, Taotao, etc.). Verify against your bike’s model and year.
- Installation effort: Some products require additional hardware or adapters. Review the listing for hardware availability and any required modifications.
- Quality signals: Look for reinforced joints, corrosion-resistant finishes, and consistent welds to indicate long-term reliability in off-road use.
When evaluating options, compare how each swing arm will influence handling, ground clearance, and rear suspension travel. For riders upgrading from a worn or bent arm, prioritize models with confirmed compatibility for your rear wheel size and brake type. For builds emphasizing weight savings, aluminum options can offer performance benefits, while steel variants excel in durability under rugged terrain.