Supertech 13.80mm Max Lift Single Valve Spring Kit | 2017+ Honda Civic Type R (SPRK-K20C-1) Honda Passport 3rd Gen (2019+) and 8 cylinder import and

and 8 cylinder import and domestic engines and provides for maximum bore sizes and boost potential

Power output may vary depending on many factors including

both in performance and aesthetics

Stage 2 (21PSI) boost targets in Sport

eliminating installation guesswork and drastically reducing calibration time

Supertech 13.80mm Max Lift Single Valve Spring Kit | 2017+ Honda Civic Type R (SPRK-K20C-1) Honda Passport 3rd Gen (2019+) and 8 cylinder import andFITS: 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