Wilwood Front Hat Kit FSLI4 13.00in 2003-05 Scion xA xB

The Wilwood FSLI4 Front Hat Kit 13.00in 2003-05 Scion xA xB provides a front braking upgrade using a forged Superlite four-piston caliper and oversized rotor configuration to deliver greater pad capacity and consistent, track-proven performance.

Product overview: This kit pairs Wilwood’s forged Superlite four-piston caliper design with oversized rotors in a lug-mounted hat arrangement, creating a specialized solution for applications where increased pad area and rigid caliper construction are required.

• Forged Superlite four-piston caliper — The forged construction provides a rigid mounting platform for the pistons, which supports consistent piston motion and caliper stability under heavy use.
• Big pad capacity — Increased pad surface area accommodates larger friction material, which helps distribute braking loads across a greater contact area.
• Oversized rotors — Larger rotor diameter increases the brake’s contact radius relative to stock, affecting braking leverage and rotor thermal mass for sustained operation.
• Lug-mounted hat design — The lug mounting method integrates the rotor hat directly with the hub interface for straightforward installation on compatible applications.
• Track-proven pedigree — The Superlite family’s roots in competition indicate a design validated in demanding environments.

Why this matters: Each element of the kit focuses on functional performance and reliability: the forged caliper maintains structural integrity under load, the larger pads increase usable friction area, and the oversized rotors alter braking leverage and mass to support repeated heavy braking intervals. The lug-mounted hat simplifies fitment to the vehicle’s wheel hub while keeping the assembly compact.

Brand note: Wilwood’s Superlite line is specified here to emphasize the engineering intent behind the kit—components developed with competition-derived design principles applied to a specialized production application.

If contents are provided, they will be listed under Contents.