Heavy-duty pair with black outer spring and red inner spring. Eye-to-eye length, preload and stiffness customizable.
Dual Spring250-310mm10mm BushPairCustomizable Inquire NowHeavy-duty dual-spring rear shock absorber designed for electric motorcycles, scooters and performance e-bikes. The outer black spring provides main support while the inner red spring adds progressive damping for heavier loads. Available in four standard eye-to-eye lengths (250 / 270 / 290 / 310 mm), and we can customize length, spring rate and preload to match your vehicle.
This shock is customizable — please tell us:
Standard 250 / 270 / 290 / 310 mm. Other lengths available on request.
Standard 10 mm top and bottom.
Soft / medium / hard depending on rider weight and load.
Adjustable spring preload nut as standard.
| Type | Dual-spring hydraulic rear shock (pair) |
| Eye-to-Eye Length | 250 / 270 / 290 / 310 mm (customizable) |
| Top / Bottom Bush | 10 mm |
| Inner Rod Diameter | 9.2 mm |
| Outer Spring Wire | 6 mm (black) |
| Inner Spring Wire | 4 mm (red) |
| Surface Treatment | Baking paint, rust-proof |
| Adjustment | Preload adjustable |
| Application | E-motorcycle, scooter, performance e-bike, trike |
Progressive damping: outer spring for support, inner spring for extra load.
Baking paint surface resists water and corrosion.
Welded eyelets with oil-resistant bushings.
Length, bush size and spring rate tailored to your bike.