Brake Caliper Upgrades

Tuthill Billet Aluminium Brake Caliper Kit with 300mm Front Discs - Front and Rear

Upgrade the braking performance of your classic Porsche with the Tuthill Billet Aluminium 300mm Front & Rear Brake Caliper Kit, developed specifically for Porsche 911 models built between 1965 and 1989. Designed using Tuthill Porsche's extensive motorsport experience, this premium brake package combines lightweight billet aluminium calipers with optimised 300mm brake discs to deliver exceptional stopping power, improved pedal feel and reduced unsprung weight.

Fits:

• Porsche 911 1965-1968 2.0L / 912 SWB (F)
• Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50

Please Note
On pre 1974 cars, with steel rear arms, the later alloy arms will need to be fitted (not 930 turbo arms) as these calipers are not suitable for use with the turbo/930 rear arms

Kit Contents
• 2 x 6-piston billet front calipers with mounting brackets
• 2 x 4-piston billet rear calipers
• 2 x 300mm front brake discs
• 2 x 3.2 rear brake discs
• 1 x Ferodo DS3000 front brake pad set
• 1 x Ferodo DS3000 rear brake pad set
• 2 x braided front brake hoses
• 2 x braided rear brake hoses

Precision CNC-machined from billet aluminium, the calipers offer superior rigidity compared with traditional cast designs, providing more consistent braking performance and improved modulation under demanding driving conditions. The complete front and rear system has been engineered to work as a balanced package, ensuring confidence-inspiring braking for fast road driving, historic rallying, track days and competition use.

Whether you're building a lightweight restomod, an RSR-inspired Porsche or a dedicated competition car, this Tuthill brake kit delivers the braking performance and engineering quality expected from one of the world's leading Porsche specialists. Designed for fast road, track, and bespoke motorsport builds, this advanced brake package has been successfully fitted to numerous classic Porsche 911 projects over the last decade.

Designed and manufactured in the UK, each caliper is precision-machined from aerospace-grade T6 billet aluminium alloy for exceptional strength, rigidity, and weight reduction.

The stainless steel pistons are specifically optimised for compatibility with the Porsche 911 master cylinder, while the internal fluid transfer design improves reliability and removes the need for external crossover pipework.

With front calipers weighing approximately 2.8kg and rear calipers around 2.2kg, this system significantly reduces unsprung weight compared to standard Porsche brake components. Combined with the larger 300mm front discs, the result is improved braking performance, sharper pedal feel, enhanced heat management, and greater confidence under demanding driving conditions.

This kit is designed to deliver modern braking capability while maintaining compatibility with classic Porsche 911 chassis and suspension configurations.

Key Features

• Billet aluminium brake caliper kit for Porsche 911
• Suitable for Porsche 911 models from 1965-1989
• Lightweight 6-piston front calipers
• Lightweight 4-piston rear calipers
• Larger 300mm front brake discs included
• Precision-machined from aerospace-grade T6 aluminium
• Stainless steel pistons optimised for Porsche master cylinder compatibility
• Internal fluid transfer design for improved reliability
• Significant reduction in unsprung weight
• Designed and manufactured in the UK
• Suitable for road, fast road, and motorsport applications

Lightweight Motorsport Brake Engineering

Reducing unsprung weight improves suspension response, steering precision, and overall vehicle dynamics.

Compared to standard Porsche brake systems, these billet aluminium calipers offer:
• Faster steering response
• Improved suspension control
• Enhanced braking modulation
• Reduced brake fade
• Greater heat dissipation during aggressive driving

The larger 300mm front discs further improve stopping performance and thermal capacity for demanding road and track use.

Why Upgrade to a Billet Brake System?

Standard brake systems can struggle under modern performance driving conditions.

This upgraded system provides:
• Increased braking power
• Improved pedal feel and consistency
• Reduced overall brake weight
• Better cooling and heat management
• Motorsport-grade durability and reliability