Rear Differential Housing Mount Insert Bushing Kit SPF2875K

Upgrade your Miata’s rear-end stability with the SuperPro SPF2875K Rear Differential Housing Mount Insert Bushing Kit. Designed to eliminate excessive drivetrain movement and wheel hop, this polyurethane insert replaces the soft OE rubber with a firmer, more performance-oriented solution—perfect for spirited driving and autocross.

Key Benefits:

• Reduces drivetrain slop and rear-end movement

• Improves throttle response and power transfer

• Precision-fit polyurethane construction

• Long-lasting, weather-resistant materials

• Easy to install – no major modifications required

Ideal for: Street performance, track days, and anyone wanting tighter rear differential control in their Miata.

Fitment Includes:

Mazda Miata:

• 1990–1993 Base – L4 1.6L (1597cc)

• 1993 LE – L4 1.6L (1597cc)

• 1991 SE – L4 1.6L (1597cc)

• 1994–1997 Base / M Edition / STO – L4 1.8L (1839cc)

• 1999–2005 Base / LS / SE / Shinsen / Mazdaspeed – L4 1.8L (1839cc)

• 1999 10th Anniversary – L4 1.8L (1839cc)