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you've noticed a curved "bellmouth" profile at the inlet of each intake runner
With these adapters
It moves more air and cuts heat soak
Increase of more than 24% in filter efficiency
which was then honed at the race site
Spoon Sports Rigid Collar - Honda legend KB1,KB2 - Full Kit Top Mounts you've noticed a curved "bellmouth"Developed by Spoon Sports, the Japanese Honda tuning specialists, Rigid Collars are precision machined aluminium rings that lock your subframe to the chassis. Factories drill the subframe bolt holes oversized so components drop in fast on the production line, and that clearance stays for the life of the car. It leaves the subframe sitting a fraction off centre, dulling steering response and letting vibration through the floor. Fit a set and the bolts
US$ 55.00
US$ 55.00
US$ 95.00
