Blox Dual Valve Springs & TRC Titanium Retainers Kit K Series K20 K24 K20a

Each set provides maximum lift while preventing valve float and helps counter the effects of spring surge. These are perfect for naturally-aspirated and forced-induction engines.

Easy installation, no machining is required. Highly recommended for aftermarket, performance camshafts.

For maximum results, use with BLOX Racing Ti retainers and high compression valves.

Engine Applications: K20A,K20A2, K20Z1, K20Z3, K24A-K24A3

Set includes 16-piece valve springs and 16 titanium TRC retainers

ATTENTION AFTERMARKET KEEPERS ARE RECOMMENDED (SUPERTECH,SKUNK2,BC ETC).

IF YOU USE OEM HONDA K SERIES KEEPERS USE FROM 2002-2004 ONLY

FAILURE TO DO SO WILL RESULT FROM DAMAGE

Seat pressure 87 pounds

See list below for factory single and dual valve spring equipped K-series vehicles/engines:

Factory single valve spring equipped K-series engines:
- 02-05 Civic Si K20A3
- 02-06 RSX Base K20A3
- 04-06 RSX Type-S K20A2/Z1
- 06-11 Civic Si K20Z3

Factory dual valve spring equipped K-series engines:

- 02-mid'03 RSX Type-S K20A2
- 04-08 TSX K24A2
- 00-09 S2000 F20C/F22C
- 01-10 JDM RSX Type-R & Civic Type-R K20A

Supertech keepers (5.5mm 7-degree keeper) part number: KPR-5.5/7A x 32pcs
OEM Honda/Acura part number: 14781-PR7-A01 x 32pcs

If performing a full dual valve spring upgrade to a single valve spring equipped K-series engine, dual valve spring seats are required to complete the upgrade aside from dual valve springs, retainers, and keepers,.

**Important K-series Retainer Info:
Titanium K-series retainers require the use of either OEM K-series dual-valve-spring keepers or Supertech brand keepers for proper fitment. Keepers from a single valve spring equipped K-series engine are incompatible with TRC titanium retainers. Honda changed the OEM keeper groove angle on all 04+ K20-series engines (ie. single valve spring equipped) making them incompatible with all dual valve spring retainers.