Park Tool CC-4.2 Chain Checker Tool MFPN=2702055 year/model Deluxe ThruAktiv (A1-B1) Trek

year/model Deluxe ThruAktiv (A1-B1) Trek Mount description eyelet assembly

}Abus IvyTex 7210 Chain Lock - 85cm Keyed Gray

Tool-Free installation

KMCs Double X durability

}Park Tool FFG-2 Frame and Fork End Alignment Gauge Set

Park Tool CC-4.2 Chain Checker Tool MFPN=2702055 year/model Deluxe ThruAktiv (A1-B1) TrekA worn bicycle chain can cause poor shifting and expensive drivetrain damage. The Park Tool CC 4. 2 Chain Checker is a drop in gauge that measures chain wear accurately. It contacts the chain in three places eliminating guesswork. Compatible with 5 to 13 speed and single speed chains it indicates wear at 0. 5% 0. 75% and 1. 0% matching manufacturer replacement recommendations. Measures bicycle chain wear accurately preventing expensive drivetrain