Eliminate dropped chains forever and more than double your chainring life
The OneUp BB Mount / ISCG03 guide uses the same simple, one tool adjustment as our best-selling ISCG05 Chain Guide. At only 34g the OneUp BB Mount / ISCG03 Chain Guide weighs less than a sip of water, and can save you money in less than a season.
Chainline: 5.5mm adjustment
Mount: Threaded BB Mount / ISCG03*
*Almost all ISCG03 equipped bikes have threaded BB shells and so are compatible with this guide. Double check you have a threaded BB before ordering.