AuryngMD 270mm Rear Shock Absorber for 70–140cc Pit Bikes — 11mm Heavy-Duty Spring, 600 lb Load (White/Black)

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

This replacement damper combines an 11mm heavy-duty spring with a corrosion-resistant body to deliver dependable damping, better stability, and longer service life than worn stock shocks. Built from steel and aluminum alloy and finished with a white painted spring and black anodized body, it’s intended as a straightforward upgrade or repair part for brands such as Coolster, SDG, SSR and many other small-to-mid-size models. Note: it is not compatible with CRF50 or KLX110R; always verify dimensions before purchase.

Will this shock fit my pit bike or ATV?

The shock measures 270mm (10.6") eye-to-eye center with a total length of 305mm (12") and uses 10mm mounting holes. It is made to fit most 70cc–140cc models and common makes like Kawasaki, Coolster, SDG, SSR and similar small motorcycles and quads. Make sure your bike’s eye-to-eye measurement and mounting-bolt size match these specifications to ensure a proper fit.

• Eye-to-eye length: 270mm (10.6")
• Total length: 305mm (12")
• Mounting hole diameter: 10mm (0.4")
• Compatible range: most 70cc–140cc pit bikes, dirt bikes, quads

How durable and heavy-duty is the spring and body?

The shock uses an 11mm heavy-duty steel spring and a body constructed from steel and aluminum alloy, finished for corrosion resistance. The spring and materials are selected to withstand rough trails and frequent use while resisting rust and premature wear. The shock is rated for a maximum load of 600 lbs, providing extra capacity for riders carrying gear or riding two-up on small platforms.

• Spring diameter/thickness: 11mm heavy-duty spring
• Body materials: steel plus aluminum alloy
• Protective finish: white painted spring, black anodized body
• Max rated load: 600 lbs

Will it improve ride comfort and handling?

Yes — replacing a worn shock with this damper reduces vibrations and softens impacts from bumps, improving traction and control. The tuned spring rate and damping characteristics help stabilize the rear end during cornering, braking and rough terrain, which translates to a smoother, more predictable ride. For best results, pair with properly inflated tires and check rear suspension preload settings where applicable.

• Reduces road and trail vibrations
• Helps maintain rear-wheel contact and traction
• Improves stability when carrying heavier loads
• Simple bolt-on replacement for quicker service

How easy is installation and what should I check first?

Installation is designed to be bolt-on using the standard 10mm eye mounting holes—no cutting or welding is required for compatible bikes. Before ordering, measure your existing shock’s eye-to-eye length and mounting hole diameter, and confirm clearance around the swingarm and frame. If you’re not confident, a mechanic or dealer can verify fitment quickly.

• Standard mounting: 10mm bolt-hole size
• No modifications expected for compatible models
• Check existing shock length and mounting bolts before purchase
• Professional installation recommended if unsure

Who this is for: Riders and mechanics who need a robust, economical replacement shock for small to mid-size pit bikes, dirt bikes, ATVs and quads. This part suits owners of Coolster, SDG, SSR and many similar 70–140cc machines looking for improved comfort, higher load capacity, and long-lasting corrosion resistance without major modifications. Avoid if your model requires specific OEM-only geometry (for example CRF50 or KLX110R).