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GrimmSpeed

GrimmSpeed 15+ Subaru BRZ/FR-S Lightweight Crank Pulley - Blue

Regular price $135.00 USD
Regular price Sale price $135.00 USD
Sale Sold out

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Proven Performance.

Your factory crank pulley is responsible for transferring energy from your crankshaft to your water pump, a/c compressor and alternator. It does this by way of a rubber belt and it does it's job well. The drawback to the factory pulley is that it's quite heavy. Reasons for this include less expensive manufacturing and using the pulley's mass to smooth out 'noise' in the accessory system (NOT to be confused with functioning as a harmonic dampener, which it does not). The GrimmSpeed Lightweight Crank Pulley reduces the rotational mass of the system, allowing your engine to accelerate and decelerate the rotating assembly more quickly.

Quick Specs

  • 75% Reduction in Rotating Mass - weighs 1.1lb vs the 4.4lb OEM pulley
  • Machined 6061 T6 Aluminum - high quality, precision construction
  • Hard Anodized Finish - ensures a durable finish and resists corrosion
  • Removal Tool Mounting - allows the use of the GrimmSpeed Crank Pulley Tool
  • Factory Fitment - direct replacement for easy installation

Design
The design process for this pulley ensured that a perfect factory replacement fitment was maintained while performance was maximized. It's a common misconception that the mass of a crank pulley alone determines its effectiveness. The truth is that it's actually the moment of inertia that affects the pulley's ability to improve engine and throttle response. The moment of inertia, in non-engineering terms, is a function of not only the mass of an object, but how that mass is distributed about it's rotational axis. A lower moment of inertia means that less torque is required to spin the crank pulley and, in turn, the crankshaft/engine. Our engineers took great care to keep the already minimal mass as close to the center of the pulley as possible without sacrificing its strength.  

The result is a pulley that fits well, looks beautiful and works exactly as intended. From the first test drive, you'll notice smoother operation, faster response and a more enjoyable drive. Much of this is difficult to quantify, but you can see from the datalogs below that when compared to the OEM pulley, the GrimmSpeed Crank Pulley quantitatively improved throttle response.

crank-pulley-subaru-fafb-15-635-3.jpg

Another major improvement made is that you'll find the necessary threaded holes to use our Crank Pulley Removal Tool for safe and easy installation and removal. On newer vehicles, cars can simply be put into a high gear to break the crank pulley bolt loose, but as with older chassis vehicles, this bolt will likely become quite stubborn with time. The use of the GrimmSpeed Removal Tool will make removal quick and easy.

Materials
Like any GrimmSpeed product, these pulleys are built to last. Using locally sourced 6061 T6 aluminum billet, the pulleys are machined and measured to verify critical dimensions before being anodized. The bright dip anodizing process that we use ensures a durable finish that will protect the pulley from corrosion. Lastly, each pulley is laser etched with a sharp GrimmSpeed logo. 

Performance
Proven performance from a crank pulley can be difficult to quantify, but when you're pulley is meticulously engineered, the results are there. Below is a chart showing the free revving of a stock BRZ equipped with a stock pulley and then a GrimmSpeed pulley. It's easy to see that the engine reaches redline faster and drops to idle faster with the GrimmSpeed Lightweight Crank Pulley installed. That's improved throttle response that you'll appreciate immediately. 

crank-pulley-subaru-fafb-16-original.jpg

Fitments

  • 2015-18 Subaru WRX (19+WRX will need an additional OEM backing piece)
  • 2013+ Subaru BRZ 
  • 2013+ Toyota FRS/86


This Part Fits:

 

Year Make Model Submodel
2013-2016 Scion FR-S Base
2013-2020 Subaru BRZ Limited
2013-2019 Subaru BRZ Premium
2015 Subaru BRZ Series.Blue
2016 Subaru BRZ Series.HyperBlue
2018,2020 Subaru BRZ TS
2014-2015 Subaru Forester 2.0XT Premium
2014-2015 Subaru Forester 2.0XT Touring
2014-2015 Subaru Forester 2.5i
2014-2015 Subaru Forester 2.5i Limited
2014-2015 Subaru Forester 2.5i Premium
2014-2015 Subaru Forester 2.5i Touring
2011-2013 Subaru Forester X
2011-2013 Subaru Forester X Limited
2011-2013 Subaru Forester X Premium
2011-2013 Subaru Forester X Touring
2012-2015 Subaru Impreza Base
2012-2015 Subaru Impreza Limited
2012-2015 Subaru Impreza Premium
2012-2015 Subaru Impreza Sport Limited
2012-2015 Subaru Impreza Sport Premium
2013-2015 Subaru Legacy 2.5i
2013-2015 Subaru Legacy 2.5i Limited
2013-2015 Subaru Legacy 2.5i Premium
2014 Subaru Legacy 2.5i Sport
2015-2020 Subaru WRX Base
2015-2020 Subaru WRX Limited
2015-2020 Subaru WRX Premium
2015 Subaru XV Crosstrek Base
2014-2015 Subaru XV Crosstrek Hybrid
2014-2015 Subaru XV Crosstrek Hybrid Touring
2013-2015 Subaru XV Crosstrek Limited
2013-2015 Subaru XV Crosstrek Premium
2017-2020 Toyota 86 Base
2018-2020 Toyota 86 GT
2017 Toyota 86 Special Edition
2019 Toyota 86 TRD Special Edition

Shipping & Returns

In most cases orders are processed same day or the next business day. Most orders take about 1-3 business days to ship.

Please note that all orders are processed and shipped Monday-Friday 10a-6p PST excluding weekends and holidays.

Any orders placed after 4p PST for items that are in stock will be shipped the next business day

Returns and exchanges are only offered on eligible items, excluding final sale and special ordered items.

All returns/exchange inquiries must be made within 14 days after receipt of order. Any inquiries after the 14 day period will not be honored. Please contact our sales staff for any return/exchange inquiries, and we will be more than happy to assist you!

Any returns received without an RMA (Return Merchandise Authorization) number will be automatically declined, and the customer will be responsible for shipping the order back to them.

Once you receive your RMA number, you will have 30 days to ship the item/order back to the respective location. If the item/order is not shipped within the 30 day period, the return will be declined, and the customer will be responsible for paying for shipping the item/order back to them.

Special Order & Final Sale

All special order items are deemed as "made to order" - and therefore cannot be canceled, returned, exchanged, or refunded for any reason. The same policy applies to final sale items. These are non-negotiable terms, so please keep this in mind before checking out. If you have any questions regarding these terms, please feel free to read our policy for special order and final sale items, or contact one of our sales representatives for clarification!