Overview Reviews Product Description For competition and OEM replacement Features lightening holes, reduced friction and Quadra X-Ring design, which increases chain life from 1.5-2 times longer than a standard O-ring chain Comes with clip-type master link. CHAIN 520 SRX2 X 150 LINK Product Videos Product Reviews Write a Review Write a Review × EK Ek 520 Srx2 Chain 520Srx2150 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *