Lightweight BRZ/Scion Water Pump Pulley

🔧 GFB Lightweight Pulley Kit – BRZ / Scion

Massive Weight Reduction. Faster Revving. Sharper Response.

Unlock real engine performance gains with the GFB Lightweight Pulley Kit, designed specifically for the Subaru BRZ / Scion FR-S platform. Engineered by Go Fast Bits, this kit reduces rotational mass to improve throttle response and overall engine efficiency.

⚙️ KEY FEATURES

• CNC machined from 6061-T6 aluminium billet
• Black anodised finish for durability and stealth appearance
• Complete 3-pulley kit (not just crank pulley)
• Direct bolt-on upgrade
• Precision balanced for smooth operation

🚀 PERFORMANCE BENEFITS

⚡ Sharpened Throttle Response
Engine reacts quicker to throttle inputs for a more connected driving feel.

🏎️ Faster Revving Engine
Reduced rotational mass allows the engine to spin up more freely.

💪 Stronger Acceleration Feel
Improved “urge” through the rev range—especially noticeable in lower gears.

📉 WEIGHT & INERTIA ADVANTAGE

• Total Weight Saving: 2.2kg
• Weight Reduction: 77% vs factory
• Rotational Inertia Reduction: 83%

👉 It’s not just about weight—reducing inertia is what delivers real performance gains.

🔬 ENGINEERING OVERVIEW

Unlike single pulley upgrades, this kit replaces multiple rotating components, compounding the performance benefit.

Each pulley starts as a solid billet of 6061-T6 aluminium, then is:

• CNC machined to exact tolerances
• Optimised for reduced mass and strength
• Anodised for wear resistance and longevity

The result is a lighter, stronger, and more responsive rotating assembly.

🔩 SPECIFICATIONS

• Material: 6061-T6 Aluminium
• Finish: Black anodised
• Kit Includes: 3 pulleys
• Fitment: Direct replacement
• Design: Lightweight, high-strength

🚗 VEHICLE APPLICATION

• Subaru BRZ
• Scion FR-S

🏁 PERFECT FOR

• Naturally aspirated performance builds
• Track and spirited street driving
• Drivers wanting improved engine response
• Lightweight performance upgrades

💡 WHY UPGRADE MULTIPLE PULLEYS?
Replacing just one pulley gives minimal gains. This 3-piece kit maximises inertia reduction, delivering noticeable improvements you can actually feel every time you drive.