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02-07 WRX & STI Crower Cams & Valve Train Kit

Crower cams for the 02-05 EJ20 WRX and 04-07 EJ25 STI are made from new billet cores, they are not regrinds. Crower cams require zero head modification for installation in the USDM EJ20 and EJ25 cars, other than the valve springs and retainers required with some of the more aggressive grinds. Designed to suit a multitude of applications, Crower cams are available in four off-the-shelf grinds for the 02-05 WRX and the 04-07 STI, though custom grinds are available for those looking for more than these offerings provide.


Stage 1 Cams

Street use with emphasis on bottom end and mid range power. Works with stock springs up to factory rev limiter.


  • Specs:
  • RPM Range: Idle to 7000+
  • Advertised Duration (Seat): Int: 256° / Exh: 256°
  • Duration @ .50": Int: 216° / Exh: 216°
  • Gross Lift: Int: .380" / Exh: .380" (9.65mm)
  • FITMENT:
  • Subaru STI 2004-2007
  • Subaru WRX 2002-2005
Description Part # MSRP Price Inventory  
02-05 WRX EJ205 62580-4 $683.06 $628.42 Special Order: 8+ week ETA
04-07 STI EJ257 62590-4 $756.68 $696.14 Special Order: 8+ week ETA
Stage 2 Cams

Best cam choice for a daily driver. Delivers excellent top end without loosing low end torque. Spring kit 84185 is recommended.


  • Specs:
  • RPM Range: 1000 to 7500+
  • Advertised Duration (Seat): Int: 264° / Exh: 264°
  • Duration @ .50": Int: 220° / Exh: 220°
  • Gross Lift: Int: .400" / Exh: .400" (10.16mm)
  • FITMENT:
  • Subaru STI 2004-2007
  • Subaru WRX 2002-2005
Description Part # MSRP Price Inventory  
02-05 WRX EJ205 62581-4 $683.06 $628.42 Special Order: 8+ week ETA
04-07 STI EJ257 62591-4 $756.68 $696.14 Special Order: 8+ week ETA
Stage 3 Cams

Designed for street/strip applications and features a slight lope at idle and great top end power. Requires spring/retainer kit 84185.


  • Specs:
  • RPM Range: 1250 to 8000+
  • Advertised Duration (Seat): Int: 272° / Exh: 272°
  • Duration @ .50": Int: 228° / Exh: 228°
  • Gross Lift: Int: .406" / Exh: .406" (10.31mm)
  • FITMENT:
  • Subaru STI 2004-2007
  • Subaru WRX 2002-2005
Description Part # MSRP Price Inventory  
02-05 WRX EJ205 62582-4 $683.06 $628.42 Special Order: 8+ week ETA
04-07 STI EJ257 62592-4 $756.68 $696.14 Special Order: 8+ week ETA
Stage 4 Cams

Drag Race and radical Street/Strip. Requires #84185 spring kit and compatible ECU upgrade for optimum results. Rough idle. Requires spring/retainer kit 84185.


  • Specs:
  • RPM Range: 1500 to 8500+
  • Advertised Duration (Seat): Int: 280° / Exh: 280°
  • Duration @ .50": Int: 234° / Exh: 234°
  • Gross Lift: Int: .415" / Exh: .415" (10.55mm)
  • FITMENT:
  • Subaru STI 2004-2007
  • Subaru WRX 2002-2005
Description Part # MSRP Price Inventory  
02-05 WRX EJ205 62583-4 $683.06 $628.42 Special Order: 8+ week ETA
04-07 STI EJ257 62593-4 $756.68 $696.14 Special Order: 8+ week ETA
Crower Valve spring & Retainer Kit

Crower's valve train kit features strengthened steel valve springs and titanium retainers, designed for use in the cam applications with increased lift and higher revs. OEM valve springs just aren't strong enough to handle cams with increased lift, this Crower kit requires zero machine work for installation and is an affordable solution to similar setups. Kit includes 16 springs & 16 titanium retainers.


  • Specs:
  • Seat: 1.420" @ 60 lbs
  • Nose: 1.000" @ 161 lbs
  • Coil bind: 0.860"
  • FITMENT:
  • Subaru STI 2004-2007
  • Subaru WRX 2002-2005
Description Part # MSRP Price Inventory  
Valve Train Kit 84185 $304.26 $279.92 Special Order: 8+ week ETA
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©2014 JSC Speed Inc.
All Rights Reserved.

510 Hyde Park
Doylestown, PA
18902

Tel: 215.489.2820
Fax: 215.489.2826