Grams 72mm Drive-By-Wire Throttle Body

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Product Reviews

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  1. Grams 72mm

    Posted by Cesar '13FRS on Dec 12th 2017

    I love it! quicker response from my FRS after installing this. Quick and easy install. If you buy this before getting a CAI plan on heating your OEM intake to make it fit or buying an adapter. I bought the Perrin intake hose and I still had to heat that one up.

  2. Very well designed part

    Posted by Unknown on Dec 2nd 2017

    Great part and almost a complete plug an play and I say that only because there was one unwanted side effect. My FRA is a automatic and when the defroster is on the a/c cycles causing a exaggerated throttle jump which sometimes makes it hard to brake during city driving. There is a definite increase in throttle response and power.

  3. Throttle Response

    Posted by Joe G. on Aug 2nd 2017

    Amazing throttle response now! It helps tremendously with the car's lag that it has at lower RPMs. Super easy installation, and a must have direct bolt on part for easy gains.

  4. Grams 86 Throttle Body

    Posted by Unknown on Apr 17th 2017

    Installed the larger grams throttle body and it is awesome, a very well made piece with simple standard installation. Response improvements and some mild gains as well. Also even the customer service from Grams is very good when I had a question. Very nice product for the price thank you 86Speed

  5. Grams Throttle Body

    Posted by Unknown on Apr 8th 2017

    Easy installation with basic tools. Car just wants to go. An excellent compliment to my supercharger

  6. Grams TB

    Posted by Glenn on Nov 26th 2016

    Easy install, great product. One of the best upgrades to get, especially with an intake.

  7. Works Perfect.

    Posted by Unknown on Oct 28th 2016

    easy installation, great throttle response and very happy with it.

*Product Videos

Testing out the Grams 72mm Throttle Body - It made Power 02:00

Testing the Grams Drive by wire Throttle Body for Scion FRS/Toyota 86/Subaru BRZ - Mods Kraftwerks c30 Supercharget kit, MXP UEL-Header, MXP over-pipe, Motiv Concepts front pipe, MXP-SP Catback, Grams 72mm Throttle body (off and on) Tested on E72 Flex Fuel Read about it here

  • Testing out th...
    Testing the Grams Drive by wire Throttle Body for Scion FRS/To...
Grams Performance
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Product Description

The new Grams 72 mm Drive-By-Wire Electronic Throttle Body for Subaru BRZ/FRS is a perfect upgrade for the factory Subaru 65 mm throttle body; delivering a 48% increase in airflow. Each throttle body includes all new components including a CNC machined billet 6061-T6 aluminum housing with a precision-honed oversized bore, a high-torque servo motor, and a proprietary Non-Contact Hall Effect TPS sensor. To ensure the best performance, throttle response, and drivability, each TPS sensor is calibrated to meet the specific requirements of the vehicles engine management system. The Grams electronic throttle body is an ideal solution for both modified and stock engines with increased airflow demands.



48% increase in airflow over the stock 65 mm Throttle Body
Precision Honed Oversized 72 mm Bore
CNC machined billet 6061-T6 aluminum housing
Aluminum Throttle Plate
Factory Programmable Non-Contact Hall Effect TPS
Optimized TPS Response Curve
High-Precision Servo Motor
Includes Thermal Throttle Body Gasket, Wiring Harness Adapter, Tapered Aluminum Adapter and Coolant Bypass Adapter


Part Number Fits:
2013 - 2017 Scion FRS (Any)
2013 - 2017 Subaru BRZ (Any)
2017 with Red Aluminum manifold - the tabs need to be adjusted (no big deal)
**Not suggested with the Edelbrock S/C Kit unless you want to shorten the intake tube
Read more about it on our Blog - HERE