Vintage Sakae SR Roundtech Constant Radius Chainring for road bikes, 53 teeth, 130 BCD pattern

Condition: Brand New in original packaging (New Old Stock); external packaging shows some shelf wear, scuffs, age spotting and plastic yellowing, but ring is unused and unopened

Machined silver alloy construction

Markings: 'SR Sakae', 'SR 211', '53' stamped on chainring

Fits 130mm BCD 5-bolt road cranksets (compatible with many classic Japanese and international road cranks)

Weight in packaging: 160g (see photo)

Constant Radius Chainring design for improved power transfer

Product of Japan – premium aftermarket upgrade from the classic 1980s/90s era

Iconic vintage Sakae SR logo and retail card

Perfect for restoring vintage road bikes or for period-correct custom builds