Paragon Track Performance Big Brake Kit (PA025 4 piston) - Lexus IS (XE30) / GS (L10) Rear

Paragon Track Performance Big Brake Kit (PA025 4 piston) - Lexus IS (XE30) / GS (L10) Rear

Paragon Track Performance Big Brake Kits offer superior braking performance specifically designed for track day enthusiasts. Come complete with every component required to upgrade your brake system. Developed with performance, quality, and longevity in mind, only the finest materials/components were used to ensure the brake kits to perform and last under both street and track conditions.

• Features Paragon PA025 4 piston calipers

• Fully-floating 2-piece rotors, with 48 directional ventilation vanes for optimal cooling performance. Runs up to 30% cooler than O.E. rotors

• Hard anodized/ENP nickel plated calipers, and hard anodized rotor hats for increased resistance to wear and discoloration under extreme track conditions

• Piston sizes optimized for each application. Designed to work flawlessly with OEM ABS and brake master cylinder

• Confidence-inspiring heat resistance during extended sessions. Optimum bite, modulation characteristics, thermal stability, and durability

• Recommended usage: Street / Track

• Complete pre-assembled axle set

• Retains OEM E-brake function

Includes:

• One pair of Paragon PA025 4 piston calipers

• One pair of Paragon 48 vane fully-floating 2-piece rotor assemblies with hard anodized 6061-T6 aerospace grade aluminum hats, stainless steel bobbins, and anti-rattle clips

• One set of Paragon P3 “Street/Track” semi-metallic brake pads (manufactured by Winmax Japan, other compounds available at additional cost)

• One pair of caliper mounting brackets and all necessary hardware

• One pair of Goodridge DOT approved stainless steel braided brake lines

• One set of caliper anti rattle clips

• Detailed installation manual

***Please verify wheel fitment / clearance before ordering. All Paragon big brake kits are custom made/packaged to order, and cannot be returned due to wheel fitment issues.

Wheel Fitment Template Download (PDF): 355x32mm / 380x32mm

> How to use the wheel fitment template (PDF)

**355mm brake kits generally require 18" or larger wheels, while 380mm brake kits generally require 19" or larger wheels. Fitment varies due to different specs / wheel design. Verify fitment with wheel fitment template.

Application: 

• 2014-Present Lexus IS (XE30) Rear

• 2013-2020 Lexus GS (L10) Rear

• 2021-Present Lexus IS500 Rear

Kit Number: 

• PBK.04.161.355.320.TL.01.02.Px.R (355x32mm Rotor)

• PBK.04.161.380.320.TL.01.02.Px.R (380x32mm Rotor)

PA025 4 Piston Calipers

• Mil-Spec hard coat anodized or ENP electroless nickel plated finish

• CNC machined from billet 6061-T6 aluminum

• Outstanding rigidity. Reduces compliance which allow for a consistent pedal feel, and improves responsiveness/modulation characteristics

• Titanium nitride (TiN) coated pistons. Improve durability and extend service intervals by protecting the sliding surfaces of the pistons. Allow smooth piston travel

• Stainless steel pistons can act as an effective thermal barrier due to the lower thermal conductivity vs. aluminum pistons, which help prevent brake fluid boiling and brake fade. Extra machining is done to minimize contact with the pads

• High temperature piston seals and internal dust seals are utilized to withstand the heat generated under harsh track conditions and extend caliper service life. Internal dust seals are able to offer protection against debris/contaminants and will not melt as easily as the external dust boots that are commonly used on OEM calipers

• Hard anodized/nickel plated for improved wear resistance. Will not deteriorate under extreme heat like painted/powder coated calipers

• Replaceable stainless steel abutment plates to allow smooth braking action and prevent wear on the caliper body

• Strong, yet lightweight. Each caliper weighs 5.5 lbs (without pads)

• Optional anti-knockback springs

• Stainless steel bleed screws and crossover pipes

• Each caliper is pressure tested to guarantee proper operation

ENP Caliper Finish

• Extremely durable and resistant to heat, wear, and corrosion

• More scratch resistant vs. hard anodized finish

• Easy wipe off of brake dust, brake fluid stain, and grime due to the low porosity of the plating

• Visually stunning finish which never deteriorates. Blends perfectly with any vehicle's color scheme

Floating 2-piece Rotors

• Floating 2-piece design allows thermal expansion of the rotor while minimizing deformation and ensuring the rotor is self-centered with the pads

• Superior braking and cooling performance

• Features 48 directional ventilation vanes to create suction, turbulence, and guides cool air through the rotor for improved heat dissipation and increased resistance to cracking

• Made of CM-250 special formulated high carbon alloy cast iron. Allows for an optimal bite, thermal characteristics, high-temperature strength, and durability

• Heat treated to release stress in the rotor to avoid deformation and vibration

• State-of-the-art CBN surface machining to ensure better break-in with new brake pads

• Excellent thermal capacity. Allows the rotors to absorb and dissipate heat more efficiently and help reduce chance of brake fade

• Replacement rotor rings available at competitive price

Curved Directional Ventilation Vanes

Features 48 directional ventilation vanes to create suction and turbulence, and guide cool air through the rotor to achieve better heat dissipation and increased resistance to cracking under harsh track conditions. Each rotor is left or right side specific, and the ventilation vanes are optimized to spin in a particular direction to pump the maximum amount of cool air through the rotor. This design allows the rotor to run up to 30% cooler than O.E. rotors and increases cooling efficiency by up to 30% over standard 1-piece units. Brake fade and judder are minimized during extended sessions. This means the brake system can withstand heavier track usage and provide consistent braking performance lap after lap.

Slotted Friction Face

Slotted rotor face pattern improves brake consistency by constantly cleaning the contact surface and dissipate heat generated, and gases released when the pads come into contact with the rotors. Slotted rotors have a superior advantage over blank rotors in wet or raining conditions by preventing water films to form between the brake pad and rotor surface.

Hard Anodized Aluminum Hats

• CNC machined from lightweight 6061-T6 aerospace grade aluminum

• Unsprung weight reduction

• High strength and durability

• Type III Mil-spec hard anodized to increase resistance to wear, corrosion, and discoloration

Floating Bobbins & Mounting System

Utilizes T-Bobbin rotor to hat mounting system to allow "float" in both radial and axial directions, and minimize brake judder. The high quality stainless steel hardware are corrosion resistant which allows secure mounting, and smooth expansion and contraction throughout heat cycles. Anti wear clips (McLaren spring clips) are utilized to slightly pre-load the rotor assembly and minimize rattling noise.

Caliper Mounting Brackets

CNC machined caliper mounting brackets to ensure superior strength, durability, and secure mounting of calipers to knuckles.

Paragon Brake Pads

• Manufactured by Winmax Japan

• Superior stopping power and modulation

• High fade resistance

• Consistent performance under high temperature conditions

• Compounds available for street, street / track, and dedicated track applications

• PA025 caliper uses a common pad shape, with compounds readily available from various manufacturers

 >AVAILABLE PAD COMPOUNDS

 >MORE INFO REGARDING THE PAD SHAPE

Goodridge Stainless Steel Braided Brake Lines

• Superior durability. Abrasion and corrosion resistant

• Allows more responsive and firmer pedal feel

• DOT / TÜV certified