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Disc Brake Rotor

Sparta Evolution - GP1 Front (SR125.1B21)

Ships directly from manufacturer
Check to see if this fits your vehicle

This part fits

  1. 2006 BMW Z4 3.0i
  2. 2006 BMW 325i Base
  3. 2006 BMW 325xi Base
  4. 2006 BMW 325Ci Base
  5. 2005 BMW 325xi Base
  6. 2005 BMW 325i Base
  7. 2005 BMW Z4 3.0i
  8. 2005 BMW 325Ci Base
  9. 2004 BMW Z4 3.0i
  10. 2004 BMW 325xi Base
  11. 2004 BMW 325i Base
  12. 2004 BMW 325Ci Base
  13. 2003 BMW 325i Base
  14. 2003 BMW 325xi Base
  15. 2003 BMW Z4 3.0i
  16. 2003 BMW 325Ci Base
  17. 2002 BMW 325i Base
  18. 2002 BMW 325xi Base
  19. 2002 BMW 325Ci Base
  20. 2002 BMW Z3 3.0i
  21. 2001 BMW 325i Base
  22. 2001 BMW 325xi Base
  23. 2001 BMW 325Ci Base
  24. 2001 BMW Z3 3.0i
  25. 2000 BMW 328Ci Base
  26. 2000 BMW 328i Base
  27. 1999 BMW 328i Base
  28. show all...
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About this product

Part #: SR125.1B21

Sparta Evolution GP1 rotors are direct OEM replacement rotors that come standard with the Sparta Evolution signature S-groove pattern. Designed for longevity and smooth actuation the S-groove pattern features signature ?S? shaped slots uniformly sized and evenly distributed across the friction surface. GP1 Rotors are manufactured using high carbon cast iron to increase wear resistance and heat cycling capabilities. The GP1 rotors are high performance OEM replacements designed to outperform any other OEM replacement rotor on the market.

More Details

Add-On PartR622;P518
TitleBrake Rotors - Sparta Evolution GP1 OE replacement 1-piece brake rotor

See what our community says about sparta-evolution products

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What made you choose this particular product?
Sparta is a new company with a great track record and lots of R&D/support
Is this your first time buying from this brand? Did you consider other brands?
Sparta is a new company with a great track record and lots of R&D/support
View on Michael's build
California prop 65 warningWARNING: Cancer and Reproductive Harm www.p65warnings.cs.gov

*Some manufacturer restrictions apply.

Benefits of adding this mod

How could you possibly enjoy all that tire shredding torque if you can’t stop? A good set of high performance pads, calipers, and rotors are arguably the most important upgrades you can make for a balanced, high performance build. Consistent performance across all operating conditions and reduced stopping distances result in significantly improved track times and a better daily-driver experience. Whatever your goal, we have all the brake parts you’ll need to build your dream ride (and make sure it stops).


we ship worldwide!

Based in California with 3 warehouses across the country, we’re sending out shipments everyday of the week, even Saturdays. Because your next mod shouldn’t have to wait.

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Have a question? Ask an Expert!

Finding the best parts can be tricky

- but not to worry! Our team of experienced American Muscle, JDM, Euro, and off-road tuners are ready to answer your questions (as long as we’re not in the garage wrenching on our own builds).

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Wheelwell helps you organize all your stuff for your car, I’ve loaded all my cars on Wheelwell and you can see all the parts I’ve put in them and that may help you make a decision with your own build.

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Matt Farah

Smoking Tire / The Drive

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Thank you for all the help, really. You guys are awesome. This is all great info and I really appreciate everything you have done to help me with my build.

James M.

Ford Focus ST

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Your customer service is wonderful. Thank you for taking care of this. My review will express all. Thank you!

Wallace R

Chevrolet Silverado 1500