Vargas Ultimate Rear Drag Brake Conversion Kit - Silver - BMW F3X

Product Details

The VTT F3X Ultimate Rear Drag Brake Conversion Kit is the first of its kind designed specifically for the BMW F3X platform to allow the fitment of 15-inch wheels and tires for dedicated drag racing. This kit replaces the bulky, heavy factory single-piston rear calipers and large rotors with a lightweight, high-performance system centered around 4-piston Wilwood calipers. The combination of silver 4-piston calipers and plain rotors provides a balanced thermal profile for drag racing, where heavy initial clamping is needed to hold the car in the staging beams, followed by controlled deceleration at the end of the track.

Because drag racing typically does not involve the repeated high-heat cycles of road racing, the solid plain rotors provide maximum surface area and structural integrity without the risk of cracking often associated with drilled rotors under extreme stress. This kit is a dedicated racing tool designed to help F3X owners achieve lower ETs through better tire selection and significant weight reduction.

Key Features

• Tailored Braking Profile: By selecting the "None, I will source my own" pad option, users can install specialized drag-specific or street-friendly pads independently.

• Improved Heat Management: Plain rotors offer maximum thermal mass and surface contact for consistent "holding" power during staging.

• Durable Construction: Includes 7075-T6 aluminum CNC-machined rotor hats and brackets for high strength and low weight.

• Direct Chassis Integration: Designed to bolt directly onto the F3X chassis with included high-grade hardware.

• Professional Finish: The silver caliper finish provides a high-end look that resists discoloration from brake dust and heat.

Specifications

• Pad Compatibility: Compatible with Wilwood Dyna-lite/Dyna-Pro 4-piston pad shapes (7112 or similar depending on caliper choice).

• Rotor Material: High-carbon iron plain-face rotors.

• Caliper Material: Forged or Billet Aluminum (Wilwood).

• Weight Per Side: Approximately 18.7 lbs (Total kit weight ~37.3 lbs).

• Total Weight Savings: ~18.7 lbs over factory 56 lbs rear setup.

• Brake Lines: Stainless steel upgraded lines (included/optional based on final selection).

• Wheel Fitment Note: Confirmed fitment with Weld RTS 15x10; other 15" wheels may require offset verification.

• Operating Environment: Designed for Drag Racing and Light Street use; not for Auto-X or Road Racing.

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