This 310kw Subaru WRX STI delivers knock out performance.
Citizens, meet ZROFKS – stealthy on the street, deadly on the track. It floats like a cannonball and stings like a shark. #BecauseRaceCar.
Kurt’s Subaru Spec R WRX STI has been through the thick of it – track days, road trips, engine replacements and rebuilds. You name it; this daily driver has seen it all and emerged stronger than ever.
“After the original engine failed Subaru replaced it under warranty, which blew up as well. At that point I gave up relying on stock parts and installed a built motor, with the help from Greg and his team at Top Torque Performance“, Kurt explained. “Zero fucks were given and no expense was spared – I made sure this engine was built to go the distance.”
Kurt’s story is a real life example of why many Subaru owners miss the forged internals that were last seen in the 2005 WRX STI’s.
From the outside any non-enthusiast would be excused for not noticing the blacked-out Work Emotion CR wheels or the painted Process West intercooler hiding behind the mesh grille insert on the front bar. Without doubt this WRX is all about go, without having to telegraph it to all and sundry.
Kurt’s built the interior to cater precisely to his racing requirements too.
“I fitted the Damd D Shaped Steering Wheel to obtain a smaller diameter wheel and the flat bottom for extra clearance,” Kurt said. He noted the improvements it’s made to trimming down his lap times.
Scattered throughout the interior are many niceties and nothing that is not necessary. There are Podi gauges, an Alpine head unit and of course the most important mod of all: the shift light. All positioned perfectly to keep Kurt informed on the fly.
ZROFKS has a stack of handling improvements. However, one modification in particular comes to mind for Kurt, as his most important mod after one frightening experience at Sandown Raceway.
“I was pushing harder and harder at a club track day. My brakes began to soften but I was having too much fun to pay attention. Then the brakes melted,” said Kurt, with a look of trauma in his eyes. “I lost my brakes completely at 200km/h on the back straight. I had no choice but to delicately feather the handbrake to wash off *just* enough speed to hold control around the corner and coast back to the pits,” he recalls.
“The rotors were glowing lava-red and the wheel center caps had melted from the wheels. This was my inspiration for installing brake ducting.”
Kurt says his brake ducts are one of the most memorable and favourite mods he’s fitted to his STI, for obvious reasons we think.
Kurt’s Rex attacks the bends off the track as well, such as during social events he assists in organising as a motorsport and social committee member of the WRX club of Victoria. The club tackles challenging roads such as the Reefton Spur providing demanding driver experiences that the club’s social members love.
If you ever needed a perfect example of a ‘form and function’ STI for track and the street, look no further than Kurt’s ZROFKS sleeper. You’ll find him and his car frequently at WRX club of Victoria’s social events or track days and if you’re interested in joining or following the WRX club, visit the links below.
Expect to see Kurt back out on the race track real soon – without melting brake rotors this time.
Current Power output – ~310kW at the wheels tuned on united E85 race blend.
Forged/Sleeved bottom end with Cosworth Internals
Upgraded valves, valve springs & Kelford 264 cams
ARP 625+ Custom Age head studs
Prospeed Racing Unequal length extractors
Killer B upgraded sump and baffle
Blouch Dominator 2.5XTR 8cm2 Turbo Charger running 24psi
Cotosports Upgraded OEM Blow Off Valve
Process West Front Mount Intercooler kit
Process West Big MAF cold air intake
AVO Silicone induction pipe
AVO Dump pipe and Nameless Performance 3” catback
Cosworth Parralel fuel-rail system with ID1300 injectors
Walbro 460LPH intank fuel pump.
Built by Top Torque Performance.
Tuned by Warwick @ ShadowTuned
Zerosport Winning RS Coilovers
Whiteline Heavy Duty front and rear sway-bars
Custom Brake ducts
DBA5000(front) / DBA4000(rear) discs with Winmax W7 pads and High temp race fluid
Cusco Front Strut Brace
Work Emotion CR Rims
Hankook Ventus RS3 Tyres
Eclipitech Shift-i shift light
Alpine DVD Headunit
Damd D Shaped Steering Wheel
Podi “Perfect Match” Boost Gauge & Innovate DB AFR Gauge.
Alpine DVD Headunit.
WRX Club of Victoria:
Words and Photography: Ben Cadwallader