1999 2.5 RS NA
Normal Aspiration (non-turbo)
275 H.P. Build-Up


Xcceleration Stage 4 big valve heads and race cams:

  • Designed for LOW and MID RANGE TORQUE!
  • Custom Stage 4 cams: .445 lift
  • 1mm Larger Intake Valves: 22% Increased Flow (max)
  • 1mm Larger Exhaust Valve: 41% Increased Flow (max)
  • Xcceleration Heads with custom porting, polishing and multi-angle valve job
Custom Intake Pod with MAF Sensor Housing and larger MAF Sensor
Custom Aluminum Air Tube to Throttle Body with all Breather Fittings, designed to work with 'MAF' Sensor
Ported and Polished 'Oversized' Throttle body: 70mm
Ported and Polished Intake Manifold, Powder Coated Red
2.5L Short Block w/100mm Forged 11.2:1CR Racing High-Compression Pistons w/Hollow Piston Pins and Balanced
Lightened Rods-Polished and Balanced
Lightened Crankshaft - Polished and Balanced
Powder Coated Red Valve Covers
420cc Injectors
255 Fuel Pump
Custom Fuel Rails - Parallel Fuel Delivery
Fender Air Baffle Removed
Lightened 13 Lbs. Fly Wheel,
ACT Pro-Street Clutch Kit
Hyper Earthing System - Blue Wires
Unichip Engine Management System - custom tune
Custom 8.5mm racing plug wires - Red Wires
GFB Racing Underdrive Power Pulleys
Denso Iridium Performance Spark Plugs
Optima Red Top Battery


6 piston, 13" Drilled/Slotted Rotors Front
DBA 12" Drilled/Slotted Rotors Rear
Stainless Steel Brake Lines - F&R


Xcceleration Stainless Steel Sporty Muffler with Custom 4" Tip
Xcceleration Mid-Pipe Stainless Steel)
Custom Equal Length Headers
Urethane Exhaust Hangers
Xcceleration Super Hi-Flow Metallic Cat


KYB AGX Shocks
STi Springs Lowered 30mm
Cusco Front Strut Tower Bar
20mm STi Rear Swaybar


Full Billet (1-5) Synchro Performance Transmission with the following Gear Ratios
1st - 2.916
2nd - 1.91
3rd - 1.35
4th - 0.967
5th - 0.738
Xcceleration Short Throw Shift Kit
Cusco Hardened Shifter Bushings


MOMO 'Shuttle' Steering Wheel
Sparco Competition Pedal Set
WRX Seats
Carbon Fiber Trim
Custom Shift Knob
GReddy EGT & Fuel Pressure Gauges
APillar Pod
Air/Fuel Gauge
Deluxe CD/Tape/Stereo/Weather Radio
High Output Stereo Speakers
RS Interior Floor Mats
Trunk Cargo Net
STi VI Front Spoiler
STi VI Rear Spats
Front Clear Fender Blinkers
Clear Front Turn Signal Lens
Clear Front Turn Signals
Clear Front Parking Lights
Extreme White Bulbs (Headlight and Fog)
Euro Rear Fog Light
ASA FR1 Mags17x7.5 - Silver
215/45-17 Performance Tires
STI-02 Titanium Bi-Wing/ LED Brake Light
Clear Headlight Protection
Piaa Super-Xtreme bulbs: H4 and H3
Opened Hood Scoop
Hood Vents Opened
See if your car sounds like this!