DNM 550LBS Rear Shock Absorber Fit For Surron Bee For X LightBee Motorcycle Engine Parts Fit For Surron Bee For X LightBee tensile Fit For anti rust black coating to resist mud water stiff rate upgrades soft 450lbs for heavy riders jump downhill off road use standard dimension rear shock mounting structure no or drilling needed Balanced compression support reduces rear bottom out delivers stable traction on rough trail terrain Uniform coiling structure maintains consistent damping for long term aggressive off road riding