The RA designation stands for 'Record Attempt' and has been applied to various Subaru performance models. The original venture took place in 1989 when a competition version Subaru Legacy broke the FIA World Speed Endurance Record by clocking over 62,000 miles in 18 days and set a top speed record of 138 mph. Furthering this spirit of endeavor, a special race model WRX STI Type RA NBR Special will attempt a Nürburgring speed record this summer.
In keeping with this tradition, the 2018 WRX STI Type RA delivers increased performance through weight reduction, suspension and engine upgrades. The new, numbered limited edition model comes standard with a carbon fiber roof panel, the removal of the spare tire, a carbon fiber pedestal wing and lightweight BBS® 19-in. forged alloy wheels shod with 245/35R19 Yokohama Advan Sports tires.
Powered by a 2.5-liter turbocharged BOXER engine, the limited edition WRX STI Type RA increases horsepower to an estimated 310hp with the help of an STI-specified new cold air intake and high flow performance exhaust. A retuned ECÚ and stronger pistons also contribute to the increased engine performance. The six-speed transmission features a revised 3rd gear ratio paired with a short throw shifter. The weight reduction, additional horsepower and revised gearing all contribute to faster acceleration.
Handling has been upgraded with inverted front struts and rear double wishbone suspension all with Bilstein® dampers. A modified multi-mode VDC gives the car better stability control to keep it on its intended path. The Brembo® brake system, with monoblock 6-piston front calipers and dual-piston rear calipers, features an exclusive silver finish and is paired with cross-drilled rotors for better heat dissipation.
The WRX STI Type RA is immediately identified by an exclusive Cherry Blossom Red accent around both the front mesh grille and new rear bumper cover. An STI front underspoiler has also been added for better stability at high speeds. The exterior mirrors with integrated turn signals, a roof-mounted shark fin antenna and STI fender badges now come in a black finish. The rear deck lid displays the WRX STI Type RA badge.
Source - Subaru
In addition to the eye-catching exterior, the WRX STI Type RA cabin features Recaro® performance design front seats with red bolsters and stitching as well as an embossed STI logo on the head restraints. The signature red stitching and accent trim is visible throughout the cabin. The steering wheel is wrapped in Últrasuede® for better grip and has a black gloss-finish center spoke insert with STI logo. Push-button start with Keyless Access is also standard equipment. Each of the 500 WRX STI Type RA produced for retail sale has been individually numbered with a plaque mounted on the center console.