ATI Damper 5.67in Aluminum 4 & 4 Groove 7% Overdrive (19901995 Toyota MR2 Turbo w/ 3S-GTE Engine) ATI918529
5.67in Aluminum Dual 4-Groove 7% Overdrive Super Damper for 19901995 Toyota MR2 Turbo 3S-GTE
The ATI 5.67-inch Aluminum Super Damper (part ATI918529) is engineered for 19901995 Toyota MR2 Turbo models equipped with the 3S-GTE engine. Featuring a dual 4-groove pulley design and 7% overdrive ratio, this damper improves belt traction, enhances boost response, and delivers world-class vibration control. Built from precision-machined billet aluminum and SFI 18.1 certified, the ATI918529 provides exceptional reliability and balance for both street and competition-level MR2 builds.
Performance Highlights
- 5.67-inch outer diameter provides compact fitment and precise harmonic balance
- Dual 4-groove pulley configuration supports OEM and custom belt routing
- 7% overdrive ratio increases accessory and turbo drive speed for improved response
- Lightweight aluminum construction minimizes rotating mass while maintaining strength
- Perfect for turbocharged 3S-GTE engines in high-performance MR2 builds
- SFI 18.1 certified for sanctioned motorsport safety standards
- Fully rebuildable for long-term use and consistent accuracy
Quick Specs
- Outer Diameter: 5.67 inches
- Material: Aluminum
- Pulley Type: Dual 4-Groove
- Drive Ratio: 7% Overdrive
- Design: Super Damper
- Certification: SFI 18.1
- Applications: 19901995 Toyota MR2 Turbo 3S-GTE
- Part Number: ATI918529
Why Choose ATIs 7% OD Super Damper for the MR2 Turbo?
The ATI918529 Super Damper is the ultimate harmonic balancer for 3S-GTE-powered MR2s looking to improve boost response, reliability, and high-RPM smoothness. The 7% overdrive pulley helps spool turbos faster while maintaining stable accessory operation. Whether youre running a stock CT26 turbo or a big aftermarket setup, this damper ensures consistent performance, reduced vibration, and longer engine life under boost.
Frequently Asked Questions
What does 7% overdrive mean?
The pulley diameter is slightly larger than stock, increasing accessory and turbo speed by 7%, improving boost response and engine performance.
Is it a direct-fit for the MR2 Turbo?
Yes. The ATI918529 is a direct-fit replacement for 19901995 MR2 Turbo models equipped with the 3S-GTE engine.
Does it support high boost or race setups?
Absolutely. Its SFI 18.1 certified and designed to handle extreme boost and RPM conditions common in track and drag builds.
Is it rebuildable?
Yes. Like all ATI Super Dampers, the ATI918529 is fully rebuildable for long-term accuracy and reliability.
Vehicle Fitment
- 1990 Toyota MR2 Turbo 3S-GTE
- 1991 Toyota MR2 Turbo 3S-GTE
- 1992 Toyota MR2 Turbo 3S-GTE
- 1993 Toyota MR2 Turbo 3S-GTE
- 1994 Toyota MR2 Turbo 3S-GTE
- 1995 Toyota MR2 Turbo 3S-GTE
Contact Beefcake Racing
Beefcake Racing is your trusted source for ATI Super Dampers and performance components for import and domestic builds. For help selecting the right damper or to place an order, email sales@beefcakeracing.com or call 1-855-827-7223. Our experts can guide you to the perfect setup for your Toyota MR2 Turbo project.
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