AuryngMD 270mm Rear Shock Absorber for 70cc–140cc Bikes — 11mm Heavy-Duty Spring, 600 lb Load

AuryngMD's 270mm (10.6") rear shock absorber is a heavy-duty replacement designed to improve ride comfort and stability on 70cc–140cc pit bikes, dirt bikes, ATVs, and quads while supporting up to 600 lbs.

This aftermarket rear damper is built to be a straightforward bolt-in replacement for many small-to-mid-size off-road machines, including models from Coolster, SSR, SDG and similar brands. Constructed from steel and aluminum alloy with a corrosion-resistant finish, it combines a robust 11mm spring with a compact 270mm eye-to-eye design to tame bumps and increase load tolerance without complex setup. It's important to verify mounting dimensions and compatibility before ordering to ensure proper fit.

How does this shock absorber improve on- and off-road comfort?

The AuryngMD unit uses a heavier spring rate and a damped body to reduce the impact of rough terrain, translating to fewer jolts transferred to the rider. Its construction smooths out small bumps and stabilizes the chassis on tighter turns and uneven trails.

• 11mm heavy-duty spring delivers stronger rebound control and load support
• Steel and aluminum alloy body resists deformation under stress
• White-coated spring and black anodized housing improve corrosion resistance

Will this shock fit my pit bike, dirt bike, or ATV?

This damper is sized for a 270mm overall length with a 270mm (10.6") eye-to-eye center measurement, and uses 10mm mounting holes for straightforward installation. It suits many 70cc–140cc machines from various manufacturers, but it is not compatible with some models such as the CRF50 or KLX110R.

• 270mm total length and eye-to-eye center for common small-bike rear mounts
• 10mm (0.4") standard mounting holes for simple bolt-on replacement
• Recommended for most 70cc–140cc models—confirm dimensions before purchase

How strong and durable is the AuryngMD rear shock?

Designed for heavy use, the absorber pairs a stout 11mm spring with a reinforced body to handle heavier loads and repeated trail impacts. Finishes are selected to ward off surface rust and extend service life, while the internal damping components are engineered for consistent performance.

• Rated for up to 600 lb maximum load capacity
• Solid steel and aluminum alloy construction for structural strength
• Protective paint and anodizing reduce corrosion from weather and mud

How easy is the installation and what should I check first?

The shock is built to be a no-fuss replacement using standard 10mm bolts, making it suitable for riders looking for a quick repair or an upgrade without custom fabrication. Still, measure your current shock's eye-to-eye length and mounting-bolt diameter to make sure they match this unit.

• Quick bolt-on design—no special tools or welding required
• Confirm 270mm eye-to-eye length and 10mm mounting hole diameter before ordering
• Not compatible with CRF50 or KLX110R—compare with your OEM part number

Who this is for: This rear shock from AuryngMD is intended for riders and mechanics who need a rugged, high-capacity replacement for small to mid-size off-road motorcycles, pit bikes, and ATVs. It suits weekend trail riders, racers on budget builds, and anyone replacing worn suspension on 70cc–140cc machines who wants improved load handling and a simple bolt-on solution. If you require model-specific fitment or have uncommon mounting dimensions, confirm compatibility before purchasing or contact customer support for fitment help.