GrimmSpeed Lightweight Pulley Red

Part #: GRM 095015R
MSRP: $136.99
( 44 reviews )


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Brand: Grimmspeed
Color: Red
Location: Crank
Material: Aluminum
Pulley Ratio: Stock
Weight: -3.5lb from Stock
Mfgr. Warranty: 2 Years
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
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Subaru Impreza
WRX STI 2004, 2005, 2006, 2007WRX STI Limited 2007WRX STI Hatchback 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX STI Special Edition Hatchback 2010WRX STI Limited Sedan 2011, 2012, 2013, 2014WRX STI Limited Hatchback 2011, 2012, 2013, 2014WRX STI Sedan 2011, 2012, 2013, 2014WRX 2002, 2003, 2004, 2005, 2006, 2007WRX TR 2006, 2007WRX Limited 2006, 2007WRX Sedan 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX Hatchback 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX Premium Sedan 2010, 2011, 2012, 2013, 2014WRX Premium Hatchback 2010, 2011, 2012, 2013, 2014WRX Limited Sedan 2010, 2011, 2012, 2013, 2014WRX Limited Hatchback 2010, 2011, 2012, 2013, 2014Base 1993, 1994, 1995L 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001LS 1993, 1994LX 1995, 1996Outback 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004Brighton 1996, 1997RS 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005TS 2002, 2003, 2004Outback Sport 2005, 2006, 2007, 2008, 2009, 2010, 20112.5i 2006, 20072.5i Sedan 2008, 2009, 2010, 20112.5i Hatchback 2008, 2009, 2010, 20112.5i Premium Sedan 2010, 20112.5i Premium Hatchback 2010, 2011
Subaru Legacy
Touring 1994GT 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006L 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004Alpine Sport 1994Sun Sport 1994Outdoor 1994LS 1994, 1995, 1996LSi 1994, 1995, 1996, 1997Sport 1994Base 1995Brighton 1995, 1996, 1997, 1998, 1999, 2000Outback 1995, 1996, 1997, 1998, 1999Postal 1995, 1996, 1997, 1998Outback Limited 1997, 1999GT Limited 1998, 2000, 2001, 2002, 2005, 2007, 2008, 2009L 30th Anniversary 1999Limited 30th Anniversary 1999SUS 30th Anniversary 1999L SE 2003L 35th Anniversary 2004i 2005Limited 2005GT spec.B 2006, 2007, 2008, 20092.5i 2006, 2008, 20092.5i Limited 2007, 2008, 20092.5i Special Edition 2007, 2008
Subaru Forester
Base 1998, 1999, 2000, 2001, 2002L 1998, 1999, 2000, 2001, 2002S 1998, 1999, 2000, 2001, 2002X 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010XS 2003, 2004, 2005XT 2004, 2005, 2009XS L.L. Bean Edition 2005XT Premium 2005, 2010, 2011, 2012, 2013X L.L. Bean Edition 2006, 2007, 2008XT Limited 2006, 2007, 2008, 2009, 2010Sports 2.5 X 2008Sports 2.5 XT 2008X Limited 2009, 2010X Premium 2009, 2010XT Touring 2011, 2012, 2013
Subaru Outback
Limited 2000, 2001, 2002, 2003, 2004, 2005Base 2000, 2001, 2002, 2003, 2004, 2008i 2005XT 2005, 2006XT Limited 2005, 2007, 2008, 20092.5i 2006, 2007, 2008, 20092.5i Limited 2006, 2007, 2008, 20092.5i Basic 20072.5i L.L. Bean Edition 20082.5i Limited L.L. Bean Edition 2008
Subaru Baja
Base 2003Sport 2003, 2004, 2005, 2006Turbo 2004, 2005, 2006
Subaru WRX STI
Base 2015

The OEM Subaru crank pulley has been a cause for concern ever since its original design. It is extremely heavy, susceptible to catastrophic failure, and quite unsightly. Continuing to use this on cars just wouldn't do. Eliminating rotational mass while maintaining a safe presence can increase reliability and bring faster Rev's! For this Lightweight Crank Pulley GrimmSpeed pulled out all of the stops. CNC machined from 6061 T6 Aluminum this pulley makes no compromise. It weighs in at 3.5lbs lighter than OEM while at the same time increasing its durability. Marked with a timing mark and perfect cut keyway makes this install a breeze. GrimmSpeed designed the pulley with the optimum weight for performance while avoiding misfire CEL's and engine hesitation.

REVIEWS ( 44 )



Great replacement for old OEM crank pulley
SleeperLGT 5 months ago
Grimmspeed's LWCP weighs approximately 2.3lbs whereas my stock Legacy GT pulley was over 5lbs (and falling apart)! I chose Grimmspeed's LWCP because it's not like all of the other LWCPs that are around 1.1-1.4lbs. I believe having a crank pulley that is too light can cause issues so I was pleased to see Grimmspeed offering a slightly heavier alternative. Not only does GS's LWCP look beautiful but it's remarkably well-designed and rev-matching while downshifting has become almost too easy. Grimmspeed is the best! 5 stars for sure!

I'm glad I got it
dan.vaku22864 5 months ago
I always like to research when replacing OEM parts with aftermarket to make sure to weigh the pros and con's of each. I had to replace my stock pulley after it almost separated on me into two pieces! This pulley brought only good things, even something I didn't expect. First off it looks awesome and feels quality and precisely made. The key lined up perfect and the pulley spins smooth. Just idling my motor runs smoother. Before especially when having ac on, I could feel vibrations in the cabin which I attributed to having the poly pitch mount and Group N engine and transmission mounts. The pulley helped a lot with the vibrations! Another thing that bothered me with my Subaru is how it always felt like it would bog almost stall if you didn't feather the throttle from a take off. Felt like I was in 2nd gear not 1st if that makes sense. Also these drivetrains are really unforgiving when you don't match the revs when upshifting or downshifting. You will usually feel everything bounce around and it's not pleasant! The pulley significantly improved the smoothness of the shifts which was a nice surprise to me. I think that's my favorite feature of it, being able to dive the car smoother when upshifting and downshifting while also reducing NVH. I installed it with the Mishimoto radiator and stock fans in place. It's possible and quick if you know what you are doing. Another good product from Grimmspeed!

Well worth the add
christian.bautista3659341 5 months ago
This crank should be added to your things to do for your car. I am very happy with install and the car response way better than the OEM crank. Its a must for any subaru!

Good Product, Straight Foward
Adam.T 6 months ago
This is a good bang for your buck product. Install was fairly simple especially with 2 people. I did put the belt on one tooth too much so now i need to find a way to get it back one but that was my fault. The difference in weight between pulley's is insane! It does make rev matching easier and the motor is much smoother at lower rpm's. Just make sure this pulley is the route you want to go with on your build because race car.

Great addition!
Printimus 8 months ago
This thing weighs virtually nothing compared to the stock pulley. Performance-wise, makes the engine seem less laggy than before. Great mod for the price!


  • AnswerQ: crank pulley bolt   hella flush is hella stupid 5 months ago

    I see you guys just put the crank bolt in and torqued it on the install vid. The service manual says to put oil on the cap and the threads of the bolt, then torque it down. It mentions two stages of torque and a tolerance of 45 degrees for the bolt. Why is this procedure so complicated in the fsm, and is it necessary to follow these steps with the lightweight pulley?

    • A: We recommend following Grimmspeed's instruction manual which is found below. They do not mention two stages of torquing or oiling the cap.

      5 months ago

  • AnswerQ: Harmonics?  MrFreeze 7 months ago

    How do these pulleys effect the harmonics of the motor?

    • A: The stock crank pulley is not a harmonic balancer and lightweight Subaru crank pulleys do not have any negative effects on engine harmonics.

      Zach G. 7 months ago

  • AnswerQ: Belt install  nwWRXdriver 8 months ago

    I ordeded one of these from the grimmspeed website, I was wondering if I should buy a new Gates belt as well? my 2012 WRX has 32k miles on it.

    • A: It is strongly recommended to replace the accessory belts due to the low cost and having to remove them while installing this pulley anyway.

      Nick S. 8 months ago

  • AnswerQ: weight?  WRX_Doe 11 months ago

    whats the weight of this lightweight pulley?!!

  • AnswerQ: 2.5i Impreza N/A  2.5RSBoxer 1 year ago

    I know the pulley fits 2002-2014 WRX and 2004-2015 STI. My question is would it fit the 2.5i non turbo Impreza?

    • A: This is confirmed to fit 06-11 2.5i imprezas.

      Kyle A. 1 year ago

    • A: Yes! Our pulley was designed and engineered to work with all EJ series motors. -Matt Homes Operations

      Grimm Speed 1 year ago