Nissan S15 — Troy Jenkins (Pro)
Troy’s car has seen a series of developments in the suspension department since switching from Pro-Am to the Pro series, but one aspect that has always stayed true in his car, from the SR to the RB, is the C’s Garage 555 knuckles and LCAs.
“We [Troy and brother Ben] have always run them — it’s such a solid set-up and we’ve never had to replace anything because of breakages. We’ve had a few big hits, including my one at WTAC, but never had an issue.”
It may not be 90 degrees of lock, as Troy tells us, but there is a fair amount of it dialled into the car.
“C’s [Garage] modify the lower knuckle by cutting it, shortening, and re-welding to allow for more movement. They also extended the LCA by cutting, welding in a new section, and then bracing it all underneath.”
Putting it down to a team secret, the set-up still runs a small amount of Ackermann, but Troy ensures us that the steering self-centres as it should without issue. The front utilizes a Whiteline sway bar to compensate for the weight of the RB30.
“It’s really, really heavy when you put it in there, so that was a must,” he says, and the rear still runs the factory item. The shocks are from Stance Suspension in the US, and are also run by Formula D drivers like Forrest Wang and Dan Burkett. The team corner-weighted the S15 to calculate the right spring rates and sent the details over to Stance Suspension, which promptly sent the coilovers and the toe and traction arms to suit.
Troy told us that although the Part Shop Max pieces he had previously run worked well, the Stance Suspension equivalents have made the car a lot more stable, and it is now easier to set up correctly. There’s a lot of mechanical grip in the car, so the team play with dampeners and tyre pressures to suit the track, and the rear generally runs a low spring rate (5kg) to keep it soft and grippy. When things get a bit wet, the rear sway bar will be removed to chase even more grip.
STRUTS: STANCE SUSPENSION COILOVERS; (F) 12KG SPRING, (R) 5KG SPRING
KNUCKLES: C’S GARAGE 555
ARMS: C’S GARAGE MODIFIED LCA, STANCE SUSPENSION TOE AND TRACTION ARMS