Wilwood Aerolite 6R Front Big Brake Kit w/ 14" SLT Rotors – Nissan 240SX / Skyline / 300ZX | Black

Transform your Nissan’s front braking capability with the Wilwood Aerolite 6R Front Big Brake Kit — one of the most capable bolt-on brake upgrades available for the 1989–1998 Nissan 240SX, 1989–1994 Skyline, and 1990–1996 300ZX. Featuring Wilwood’s lightweight Aerolite 6-piston radial mount caliper paired with massive 14-inch Slotted and Drilled (SLT) rotors, this kit delivers the stopping power, fade resistance, and pedal feel that serious track and high-performance street builds demand. In black caliper finish for a clean, aggressive look behind the wheel.

Key Features:

• Wilwood Aerolite 6R 6-piston radial mount caliper — lightweight, high-rigidity caliper design for maximum braking force and pedal feel
• 14-inch SLT rotors — Wilwood’s Slotted and Drilled rotor design for superior heat dissipation and gas/debris evacuation
• 6-piston caliper — three pistons per side for even pad wear and consistent clamping force across the full pad face
• Radial mount design — stiffer caliper mounting for improved brake feel and reduced flex under hard braking
• Black caliper finish — durable powder coat finish for a clean, aggressive appearance
• Bolt-on fitment — engineered for direct installation on the 240SX, Skyline, and 300ZX without custom fabrication
• Complete kit — everything required for front brake installation included

Performance Benefits:

• Massively Increased Stopping Power: 14-inch rotors and 6-piston calipers provide dramatically more braking force than the factory setup — shorter stopping distances and more consistent performance under repeated hard braking
• Superior Fade Resistance: Larger rotor mass absorbs and dissipates more heat, while the SLT slotting and drilling evacuates gases and debris to maintain consistent friction at elevated temperatures
• Improved Pedal Feel: Radial mount caliper design and 6-piston configuration deliver a firm, progressive pedal with excellent modulation — critical for precise braking on track
• Even Pad Wear: 6-piston design distributes clamping force evenly across the full pad face, extending pad life and maintaining consistent braking performance
• Lightweight Construction: Aerolite caliper design prioritizes weight reduction without sacrificing rigidity — reducing unsprung weight for improved handling response
• Track-Proven Wilwood Engineering: Wilwood’s motorsport heritage ensures every component is engineered for the thermal and mechanical demands of serious performance driving

Specifications:

• Brand: Wilwood
• Part Number: 140-18251
• Caliper Model: Aerolite 6R (6-piston, radial mount)
• Rotor Size: 14 inches (355.6mm)
• Rotor Type: SLT (Slotted and Drilled)
• Caliper Finish: Black powder coat
• Position: Front axle
• Piston Count: 6 (3 per side)
• Mount Type: Radial
• Kit Type: Complete front big brake kit

Fitment Information:

• 1989–1998 Nissan 240SX (S13 / S14)
• 1989–1994 Nissan Skyline (R32)
• 1990–1996 Nissan 300ZX (Z32)
• Note: Verify your specific year and model before ordering. Wheel clearance must be confirmed — 14-inch rotors require adequate wheel diameter and spoke clearance.
• Wheel Clearance: Minimum wheel size required — verify clearance with your specific wheel before purchasing
• Installation: Professional installation strongly recommended
• Brake Lines: Upgraded stainless braided brake lines recommended
• Rear Brakes: Rear brake upgrade recommended to maintain proper brake bias with this front BBK

What’s Included:

• Wilwood Aerolite 6R 6-piston front calipers (pair)
• 14-inch SLT slotted and drilled rotors (pair)
• Caliper brackets and mounting hardware
• Brake pads
• Installation instructions

Installation Notes:

• Professional installation strongly recommended
• Verify wheel clearance before installation — 14-inch rotors require sufficient wheel diameter and spoke clearance
• Upgrade to stainless braided brake lines for best pedal feel and safety
• Bed-in procedure required after installation — follow Wilwood’s recommended heat cycling process
• Rear brake upgrade strongly recommended to maintain proper front/rear brake bias
• Full brake fluid flush recommended at installation — use a high-temperature DOT 4 or DOT 5.1 fluid
• Re-torque all fasteners after first heat cycle

Aerolite 6R Caliper:

Wilwood’s Aerolite 6R is a radial mount, 6-piston caliper engineered for high-performance street and track applications. The radial mount design provides a stiffer, more direct connection between the caliper and upright compared to traditional lug mount designs — reducing caliper flex under hard braking and improving pedal feel and modulation. The 6-piston configuration distributes clamping force evenly across the full pad face, eliminating the uneven wear and inconsistent feel that plagues 4-piston and OEM sliding caliper designs. The Aerolite designation reflects Wilwood’s focus on weight reduction — the caliper body is designed to minimize mass without compromising structural rigidity.

14-Inch SLT Rotors:

Wilwood’s SLT (Slotted and Drilled) rotors combine two proven rotor surface treatments for maximum performance. The slots evacuate gases, water, and debris from the pad/rotor interface, maintaining consistent friction under hard use. The drilled holes reduce rotor mass for lower unsprung weight and provide additional surface area for heat dissipation. At 14 inches in diameter, these rotors provide significantly more thermal mass than the factory rotors — absorbing and dissipating more heat before fade sets in, which is critical for track use and repeated hard braking from high speed.

The S13/S14/R32/Z32 Platform:

The 1989–1998 Nissan 240SX (S13/S14), 1989–1994 Skyline (R32), and 1990–1996 300ZX (Z32) are among the most iconic Japanese performance platforms ever built — and all three are popular choices for serious track and time attack builds. As power levels increase and lap times improve, the factory braking systems become the limiting factor. A Wilwood Aerolite 6R front BBK with 14-inch SLT rotors is one of the most significant single upgrades you can make to any of these platforms, transforming braking performance from a liability into a genuine competitive advantage.

Why Wilwood?

Wilwood Engineering has been designing and manufacturing high-performance brake systems in Camarillo, California since 1977. Their products are used in NASCAR, IndyCar, IMSA, and virtually every form of professional motorsport in North America. The same engineering and manufacturing standards that go into Wilwood’s professional racing components go into their street and track performance kits — making Wilwood one of the most trusted names in performance braking worldwide.

Perfect For:

• 1989–1998 Nissan 240SX (S13/S14) track and time attack builds requiring serious front braking capability
• 1989–1994 Nissan Skyline (R32) builds seeking a major front brake upgrade
• 1990–1996 Nissan 300ZX (Z32) high-performance builds outgrowing the factory braking system
• High-power builds where factory brakes fade under sustained hard braking
• Circuit racing, time attack, and track day builds demanding consistent, fade-free front braking
• Enthusiasts who want the best available bolt-on front brake upgrade for these iconic Nissan platforms

Pro Tip: Always upgrade your rear brakes when installing a front BBK. A significantly more powerful front brake system without a corresponding rear upgrade will shift brake bias heavily forward — causing rear brake fade and potentially unstable braking behavior. Contact us for rear brake upgrade options to match this front kit.

Note: Verify wheel clearance before ordering. 14-inch rotors require a minimum wheel diameter and sufficient spoke clearance — this is a critical fitment check that must be done before purchase.