Impact - Rear Passenger: Side Pole - Driver: Rollover Rating - Toyota Racing Development (TRD) Similar to many other models of Toyota/Lexus/Scion, there are many upgrades available through the in house tuning shop Toyota Racing Development (TRD). Currently TRD produces performance parts such as lowering springs and racing struts, full coilover suspension systems, performance brake kits, rear sway bars, front strut tower bars, limited-slip differentials, upgraded clutches, axle-back exhausts and cold-air intakes for the Scion tC. Other cosmetic accessories such as TRD branded valve covers and oil caps are also offered. TRD also offered a supercharger which is a rebadged Vortech supercharger that is capable of putting out , although when installed by a dealership and under warranty it is set at . Starting in 2008, Scion began making the supercharger with tamper-proof pulleys. As of mid-2009, TRD discontinued production of superchargers for the Scion tC. Release Series line Scion used a simplified "pure price" sales model that eschewed traditional factory options in favor of fixed base-vehicle pricing and buyer customization via dealer-installed accessories; hence, the tC was offered in a single standard trim, with exterior colors and the choice of transmission typically being the only factory options. However, some limited-production special editions with added factory equipment and exclusive colors were offered. Beginning in late spring 2004, Scion launched the Release Series (RS) line, limited quantities of their current vehicles pre-packaged with individual numbered badging, exclusive accessories, and other special features. Their exterior colors were bright hues (i.e. orange, yellow, red, blue, green). 2005 tC RS 1.0 only available in Absolutely Red with 2,500 units produced 2006 tC RS 2.0 only available in Blue Blitz Mica with 2,600 units produced 2007 tC RS 3.0 only available in Blizzard Pearl with 2,500 units produced 2008 tC RS 4.0 only available in Galactic Gray Mica with 2,300 units produced 2009 tC RS 5.0 only available in Gloss Black with 2,000 units produced 2010 tC RS 6.0 only available in Speedway Blue with 1,100 units produced 2012 tC RS 7.0 only available in High Voltage Yellow with 2,200 units produced 2013 tC RS 8.0 only available in Absolutely Red with 2,000 units produced 2014 tC 10th Anniversary Series only available in Silver Ignition with 3,500 units produced 2015 tC RS 9.0 only available in Two Tone Magma Orange and Gloss Black with 2,000 units produced 2016 tC RS 10.0 only available in Barcelona