Finish
Gloss Black
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Available Rim Diameters: 15, 17"

Features

  • Center cap not included. Center cap is not available.
The Kosei K1 Racing Gloss Black wheel showcases a timeless six-spoke design that's earned legendary status among driving enthusiasts who value lightweight performance and motorsport heritage. Kosei presents this classic wheel with a sleek gloss black finish that delivers bold, understated style whether you're carving corners on backroads or heading to the track. This wheel features cast aluminum construction that balances strength with reduced unsprung weight, helping improve suspension response and handling dynamics. Available across multiple bolt patterns including 4x100, 5x100, 5x112, and 5x114.3 configurations, the K1 Racing accommodates a wide range of sports cars and performance sedans from brands like Honda, Mazda, Subaru, and BMW. The straightforward spoke design isn't just about aesthetics, it provides excellent brake caliper clearance while maintaining structural integrity under spirited driving conditions. Kosei's K1 Racing has built its reputation through decades of proven performance in grassroots motorsports, autocross events, and track days, making it a trusted choice for enthusiasts who understand that reducing rotational mass translates directly to quicker acceleration and more responsive braking. The gloss black finish resists fading while complementing virtually any vehicle color, delivering that clean, purposeful look that serious drivers appreciate.

Ratings Charts & Reviews Kosei K1 Racing

Consumer Surveys

Would Buy Again? N/A
Design 9.7 - Excellent
Quality 9.1 - Excellent
Appearance 9.5 - Excellent
Performance Benefits N/A
Proper Fit N/A
Ease of Installation N/A
Ease of Cleaning 9.9 - Excellent

Note: Customer Survey Ratings are from 0-10 with 10 being the highest.

  •   Excellent (8.6 - 10)
  •   Good (6.6 - 8.5)
  •   Fair (4.6 - 6.5)
  •   Poor (2.6 - 4.5)
  •   Unacceptable (0 - 2.5)

Consumer Reviews

  • August 20, 2025

    (Verified Tire Rack Customer)

    4.8 out of 5

    The gloss black finish was beautiful and I really like the design. Be cautious about balancing them, as the lug area is deep enough that the clamp on the balance may not reach in deep enough with the wheel facing "out". We had to mount the wheel with the face "in" and use an adapter to get solid mounting on the balancer. One wheel seemed to have a heavy spot and it required more weight to balance. On the road they are smooth with no vibration.

    One note: to find these wheels I had to choose a 2006 Miata Cup car before the web site would show them to me. I knew they would fit on my 2012 GT PRHT car but could not find them if I specified my correct car.

    • Vehicle: 2012 Mazda MX-5 Miata Grand Touring

    • Wheel Diameter: 17

    • Location: AURORA, OR

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  • August 04, 2025

    (Verified Tire Rack Customer)

    5.0 out of 5

    I was looking so hard for wheels and wanted to go a size smaller than the standard 18 inch size my civic sport hatchback uses. I liked the Kosei k1 wheels always wanted then even when I had my 8th gen civic but they had a different version K1. I treated myself to these for my bday last month since I work so hard and have nothing to show for it besides a headache ordering was a easy process and shipping them to the pep boys by me was easy once the wheels were installed wow they looked so good on there these wheels i mainly see on older honda's but its time for a current gen civic to take on a old school look thank you tire rack 10/10 on everything.

    • Vehicle: 2017 Honda Civic Hatchback Sport

    • Wheel Diameter: Not Provided

    • Location: FORDS, NJ

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  • June 19, 2025

    (Verified Tire Rack Customer)

    N/A out of 5

    Good wheel for NB Miata - offset is perfect and wheels are easy to clean. Price is right. I bought from Tire Rack specifically because of their relationship with the SCCA.

    • Vehicle: 1999 Mazda Miata

    • Wheel Diameter: 15

    • Location: LACEY, WA

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    1 of 1 people found this review helpful.

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