Derailleur hanger - check alignment, especially after impactsSpecial
Wheel hubs - check for play; spin for bearing roughness
Wheel truing - spoke tension; true if more than about 2 mm outShopSpecial
WarnBrake bleeds are brand-specific: SRAM uses DOT fluid, Shimano uses mineral oil. Open the matching how-to for your bike - do not mix kits or fluids.
Level 3 · Quarterly
About every 100 riding hours (~4 months at practice cadence) · ~$399+
Everything in Level 2, plus:
Fork - full service (air spring and damper)ShopSpecial
Shock - air sleeve service and o-ring replacementShopSpecial