OneUp Components Top Guide ISCG05 V2 Black 2025 12 mm hardened steel round

12 mm hardened steel round shackle

MatchMaker and MMX Compatible

Attaches as part of the RF Cinch system (using common Park BBT-22 bottom bracket tool) - allowing to switch between DM rings/spiders with ease

Comfortable | Durable | Breathable

The style icon is a must for the kitchen

OneUp Components Top Guide ISCG05 V2 Black 2025 12 mm hardened steel roundAs the trend for lower and slacker bikes continues, 'Little bikes' are getting more and more capable everyday. Revised for 2019 the OneUp Guide uses simple, one tool installation and adjustment as well as an all new tool less flip At only 40g the OneUp Chain Guide weighs less than a sip of water. WHY DO I NEED A GUIDE AND A NARROW WIDE CHAINRING? NW rings are awesome, but they're not perfect and every once in a while you can drop a chain while riding.