Tomioka Racing Lightweight Alternator Pulley - 2013-2020 Subaru BRZ / Scion FR-S / Toyota 86

Tomioka Racing Lightweight Alternator Pulley - 2013-2020 Subaru BRZ / Scion FR-S / Toyota 86

Tomioka Racing's Lightweight Alternator Pulley for the Subaru BRZ, Scion FR-S, and Toyota 86 reduces the factory alternator pulley weight by over 50% through CNC machining from high-quality aluminum.

Over 50% Weight Reduction on the Alternator Pulley

Tomioka Racing's Lightweight Alternator Pulley for the Subaru BRZ, Scion FR-S, and Toyota 86 reduces the factory alternator pulley weight by over 50% through CNC machining from high-quality aluminum. On naturally aspirated platforms like the FA20, where every fraction of parasitic load reduction is meaningful, reducing the alternator spinning mass contributes to improved throttle response and a more freely revving engine.

Part of the Lightweight Pulley Ecosystem

The alternator pulley is one of three lightweight pulley upgrades Tomioka Racing offers for the BRZ/FR-S/86 platform -- along with the crank pulley and water pump pulley. Installing the complete lightweight pulley set delivers the maximum rotational mass reduction available from this modification category on the FA20 platform.

Fitment Notes

• Fits 2013-2016 Scion FR S
• Fits 2013-2020 Subaru BRZ
• Fits 2017-2020 Toyota 86

Straight From Subispeed

A worthwhile upgrade for FA20 BRZ/FR-S/86 builds looking for naturally aspirated power improvements. On its own the alternator pulley is a modest change -- pair it with the crank and water pump pulleys for a complete lightweight pulley package that makes a more noticeable combined difference.

What's Included

• Tomioka Racing lightweight aluminum alternator pulley
• Mounting hardware

About Tomioka Racing

Tomioka Racing has been engineering bolt-on performance parts for Subaru platforms since 2007, with a design philosophy built around factory-style installation and real-world reliability. Every Tomioka Racing product is engineered to work with the factory setup -- clean installation, correct fitment, and durability under sustained use. For WRX, STI, BRZ, and the 86 platform, Tomioka Racing offers one of the most focused and thoroughly developed bolt-on catalogs available at this price point.