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Prepreg (Dry) Carbon Fiber Construction
The start of BMW M's 50th anniversary year sees the return of the iconic BMW Motorsport emblem
Available for order through our website or direct with an AutoTecknic authorized retail sales
Comfort Access Compatible: Maintains full RF signal function without interruption
MMX Performance Billet Coolant Expansion Cap - BMW Select Size:60mm Cap (Replaces OE Part 17117639024) Prepreg (Dry) Carbon Fiber ConstructionThe MMR Performance billet coolant expansion caps for BMW have been designed from the ground up in the UK, from a solid piece of billet aluminum. Each cap was designed to directly replace the OE cap, not merely stuck in place. 90mm fitment replaces OE part number 17117639021 while 60mm fitment replaces OE part number 17117639024. Each MMR cap starts life as a solid billet of 6061 aerospace grade aluminum. It's meticulously machined from this billet