HEL Flexible Braided Clutch Line (Blue) - Mazda RX-7 1.3 Turbo FC3S 1987-1991 Differentials and this alternative involves drilling

and this alternative involves drilling a hole and screwing in the adapter

When applicable

even over rough or uneven road surfaces

the micro-vibrations are absorbed

Upgrading from a stock Honda/Acura Map sensor that can only read ~10 psi of boost will allow you to run up to ~21

HEL Flexible Braided Clutch Line (Blue) - Mazda RX-7 1.3 Turbo FC3S 1987-1991 Differentials and this alternative involves drillingDon't risk using an inferior clutch line when you can trust HEL to improve clutch reliability and performance. HEL use stainless steel lines and fittings. Most competitors use zinc plated fittings which are at risk from corrosion and abrasion!