Replacement ISCG bolts and chainline spacers. Bolts are specific to guide models. Flat Head Bolt/Spacer Kit - BKT.ISCG.FLT Fits all Gen 1 Alloy Guides and 3 Bolt Guides with Carbon Backplates; does not fit Composite TRS SL 2 Bolt Guide. (Fits Current LG1 Race CG2LRA-100; TRS Race CG2TRA-102) Button Head Bolt/Spacer Kit: - BKT.ISCG.BTN Fits all Guides with Steel Backplates. (Fits LG1 Chainguide CG2LSA-100; TRS 2-Bolt Chainguide CG2TSA-102; TRS Chainguide CG2TSA-101) Pan Head Bolt/Spacer Kit - CGSLSA.SHIMS.I05.S Fits all Gen 2 Guides with Alloy Backplates, as well as Gen 2 Composite TRS Race SL Guides. (Fits LG1 Plus Chainguide CG20.LG1P.I05.K; LG1 Plus Lower Only CG2LPA-100; TRS Race SL Composite CG2TRA-104, TRS Plus Bash-Only CG2TPA-102; TRS Plus Chainguide CG2TPA-103) 55mm Chainline Bolt and Spacer Kit - This kit includes spacers and longer bolts, which allow e*thirteen chainguides to be adjusted to the current 55mm chainline standard from legacy chainline standards. Riders would need this kit if they update their drivetrain with a newer crankset that positions the chainring in the 55mm chainline position. This kit is compatible with 2-bolt and 3-bolt alloy or composite chainguides.
