Batteries, Starting & Charging

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GrimmSpeed 08-18 Subaru WRX/STI Lightweight Battery Tie Down - Red

$41.00

In stock

GrimmSpeed 08-14 Subaru WRX STI Lightweight Battery Mount Kit

$104.00

In stock

GrimmSpeed 08-18 Subaru WRX/STI Lightweight Battery Tie Down - Black

$41.00

In stock

GrimmSpeed 16+ Ford Focus RS Lightweight Battery Mount

$142.00

Year	Make	Model	Submodel
2016-2018	Ford	Focus	RS

In stock

Ford Racing Mustang BOSS 302 Alternator Kit

$400.00

These Ford Racing 5.0L Modular Boss 302 alternator kits include special high performance components as used on the production 2012 Mustang Boss 302 and are designed to operate at much higher rpm. The alternator uses a one-way clutch to prevent belt hop-off during upshifts. The included tensioner has higher tension for better belt control, and the larger diameter pulley slows down the armature speed, reducing drag and parasitic HP loss.

Installation Instructions