At this year’s SEMA Show, Toyota will introduce the PLUS Performance Package, developed by Toyota Racing Development (TRD) and designed to enhance the Prius model.
The Toyota Prius PLUS Performance Package comes with a series of accessories that improve the car in terms of appearance and also make it more fun to drive. The main components are included in a seven piece body kit (front and rear bumper, side sills, rear diffuser), plus the Toyota Prius PLUS Performance Package also comes with 17 inch forged wheels wrapped in 215/45R17 tires and the PLUS exterior badge.
At the interior Toyota Prius PLUS Performance Package adds new floor-mats, while the overall treatment in completed by a set of lowering springs and a rear sway bar.
Toyota press release :
The 2010 SEMA Show will mark the debut of the all-new Toyota Prius
PLUS Performance Package, a new hybrid performance line by Toyota Racing
Development (TRD).  Developed to meet the evolving demands of the
growing hybrid segment, PLUS enhances the driving experience for Toyota
hybrid enthusiasts by offering cool and fun accessories that add sporty
looks with performance handling.  The new PLUS package also features
several Toyota accessories that complement the Prius’ core values of Eco
and Advanced Technology.  The end result is a more fun-to-drive,
performance-enhanced Prius that maintains its industry-leading fuel
efficiency.
 
The Prius PLUS Performance Package starts with a seven-piece
aerodynamic body kit including a uniquely styled rear diffuser, which
enhances its already sleek appearance and maintains its 0.25 coefficient
of drag.  The aero kit also includes front and rear bumper spoilers and
side skirts, which are complemented by race-inspired 17-inch forged
wheels.  Their higher strength-to weight ratio assists in keeping the
corner weight down and performance up, while maintaining the Prius’
overall light vehicle weight and high fuel efficiency.  The wheels are
fitted with low profile 215/45R17 tires and have a custom offset, which
increases track width yet maintaining Prius’ rolling resistance. 
 
The PLUS package delivers surprising traction and handling without
sacrificing any fuel efficiency.  Improved performance handling is
achieved with the installation of sport-tuned lowering springs that
provide a lower center of gravity, enhancing the vehicles on-road
performance through quicker turn-in, enhanced steering response and
improved cornering ability.  A rear sway bar is added to reduce body
roll for flatter, more stable cornering and maneuverability.

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The package also includes exclusive floormats with a “PLUS” logo and a unique “PLUS” exterior badge. 
 
The new Prius PLUS Performance Package represents the first
installment of the new PLUS brand of accessories from Toyota and will be
available in limited production beginning in April 2011.
 
# # #
 
Toyota Prius PLUS Performance Package Features
 
• Seven-piece aerodynamic body kit includes uniquely styled rear diffuser, front and rear bumper spoilers, and side skirts
• 17-inch unique forged wheels
• 215/45R17 tires
• Lowering springs
• Rear sway bar
• Floormats with PLUS logo
• PLUS exterior badge
 

Source: Toyota