BMW Motorsport M2 CS Racing/M4 GT4 Rear Flange
SKU: 29306776748

BMW Motorsport M2 CS Racing/M4 GT4 Rear Flange

$179.10 $199.00
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Ships within 48 hours · Estimated delivery Jul 5 - Jul 10

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Description

BMW Motorsport M2 CS Racing/M4 GT4 Rear FlangeMotorsport Developed Rear Hub Upgrade for Endurance Strength and Reliability The BMW Motorsport Rear Flange Hub Upgrade is a factory engineered component designed to handle the extreme demands of endurance and competition use. Originally developed for the M2 CS Racing and M4 GT4, this upgraded hub flange features a thicker, full face hubcentric design, providing enhanced durability and reduced stress compared to the lightweight OE version found on

Motorsport-Developed Rear Hub Upgrade for Endurance Strength and Reliability

The BMW Motorsport Rear Flange Hub Upgrade is a factory-engineered component designed to handle the extreme demands of endurance and competition use. Originally developed for the M2 CS Racing and M4 GT4, this upgraded hub flange features a thicker, full-face hubcentric design, providing enhanced durability and reduced stress compared to the lightweight OE version found on standard F8X models.

During long, high-load track sessions, the original hub design can develop stress cracks around the outer hubcentric surface — particularly under endurance racing conditions. The Motorsport version addresses this by increasing material thickness and reinforcing the contact surface, distributing load more effectively to ensure consistent reliability.

Why Upgrade?

  • Genuine BMW Motorsport component, developed for GT4 and CS Racing models

  • Reinforced flange design prevents hub-centric stress cracking

  • Improves reliability in high-load and high-temperature conditions

  • Maintains OEM geometry and fitment

  • Perfect for endurance, sprint, and time-attack builds

Key Features

  • Motorsport-grade forged and heat-treated steel construction

  • Full-face hubcentric mounting surface for reduced stress concentration

  • Direct OEM replacement – fits with standard BMW rear bearings

  • Compatible with optional BMW Motorsport heavy-duty bearing

  • Sold as a pair.

  • Direct bolt-on installation, no modification required

Compatibility

  • BMW F87 M2 Competition / CS

  • BMW F80 M3

  • BMW F82 / F83 M4

  • BMW M2 CS Racing

  • BMW M4 GT4

Recommended For

  • Endurance and high-performance builds

  • Track-prepared or competition-spec M2/M3/M4

  • Preventative upgrade during drivetrain rebuilds or hub service

Important Notes

  • Designed for motorsport use only – no manufacturer warranty

  • Sold as a pair.

  • Standard BMW rear bearing is compatible, though a BMW Motorsport bearing upgrade is also available for maximum endurance reliability

  • Regular inspection is recommended during competitive use

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 29306776748

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4.1 ★★★★★
Based on 1625 reviews
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A
Verified Purchase
Andrea S.
Cuba, US
★★★★★ 5
Great for night time play!
Size: One-Size-for-Most
This ball is great! It is a 2-for-one light up feature so we love the flashing lights and if she drops it in the snow after those lights stop, we can still find it because of the strong glow that gets its charge from the flashing LED lights. Our first one lasted a few years, we lost it on a trip so now back for our second one so we can keep the night time fetch going! She is a golden retriever for size reference. Any bigger of a breed and I would worry it might be too small for her mouth. It’s a bit smaller than a tennis ball. Just don’t make the same mistake I did and let them have it in the house at night, she walked up to my bedside while I was asleep one night and squeezed it to activate it. Those lights are so bright it was a rude awakening!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 11, 2025
K
Verified Purchase
Katie
Grantham, US
★★★★★ 4
Good option for playing at night
Size: One-Size-for-Most
This ball is a good option if your dog likes to fetch at night. It stays lit for about 20 minutes or so, but that is me only leaving it out of the counter, being "charged" by whatever house lights are on. My dog isn't a big chewer, but it seems as though it would hold up well. I like that it is easy to rinse and clean. It seems to be a good value.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2026
A
Verified Purchase
Amazon Customer
Dallas, US
★★★★★ 5
Night play
Size: One-Size-for-Most
My dog like many other dogs loves to play. We needed a ball that fit into the handheld thrower we had but something that we could find it at night. This has been wonderful!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
J
Verified Purchase
Jordan
Massapequa, US
★★★★★ 1
It stopped working after three play sessions
Size: One-Size-for-Most
I thought this ball was great until a week later it stopped blinking and got lost in the snow. We only played with it for three days for 20 minutes at a time. It should’ve lasted a lot longer.
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Reviewed in the United States on December 12, 2025
A
Verified Purchase
Amazon Customer
Fort Morgan, US
★★★★★ 5
It’s absolutely perfect for fetch in the dark!
Size: One-Size-for-Most
We needed to find a glow in the dark ball to run our over active dog after dark ( gets dark now about 5 pm ish) I was hesitant to buy this ball at first. We went to try it out and it totally blew my expectations! The ball really glows, it’s a durable rubber and when it hits the ground it lights up blue and red. Incredibly satisfied and just ordered 2 more. If you need to run your dog in the dark, this is absolutely for you. Highly recommend it
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Reviewed in the United States on December 5, 2025

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