Supertech 13.80mm Max Lift Single Valve Spring Kit | 2017+ Honda Civic Type R (SPRK-K20C-1) Honda Passport 3rd Gen (2019+) Stage 2 (21PSI) boost targets

Stage 2 (21PSI) boost targets in Sport

No surprises

Vehicle-specific upper and lower mounts for a bolt-on installation

both in performance and aesthetics

Supertech 13.80mm Max Lift Single Valve Spring Kit | 2017+ Honda Civic Type R (SPRK-K20C-1) Honda Passport 3rd Gen (2019+) Stage 2 (21PSI) boost targetsFITS: K20c1 , k20c4 engines Supertech Spring Retainer kits are precision matched sets for a complete valvetrain overhaul. Developed for the performance enthusiast that wants the best the industry has to offer, Supertech Spring Retainer kits are second to none in terms of performance, quality and value. Features Seat Pressure: 77 @ 40. 60 Open Pressure: 176 @ 10 Max Lift: 13. 80mm Coil Bind: 27. 30mm Rate: 9. 9 Kit spring: SPR H1003S Retainer: RET 1003