• Rare, New, Beautifully Made From Alloy, is a Shimano 600 HP 130mm BCD 42T Biopace Road chainring. CR-BP25.
• Silver in color. HP = more round for higher cadence.
• Works with 5/6/7/8/9-speed chains.
• Equal in quality to Deore XT and made in Japan quality, from 1987.
• 53 grams/1.8oz.
• CRB109.
• FREE shipping in the USA.