Skip to product information
1 of 4

UNLOCK BIGGER DISCOUNTS WITH ML PLATINUM

Sign up now for £9.90 FREE.

StopTech

StopTech BMW F80 F82 2-Piece Aero Front Brake Discs (Pair) (M3 & M4)

StopTech BMW F80 F82 2-Piece Aero Front Brake Discs (Pair) (M3 & M4)

Regular price £1,391.51 Inc. VAT
Regular price £1,464.75 Sale price £1,391.51 Inc. VAT
Anniversary

Price Match

In Stock

Receive your order by tomorrow if ordered within
00 hours
00 mins
00s.

Get It By

Receive your order tomorrow. Subject to availability.

Collect 0 points

Purchasing this product will earn you 0 loyalty points worth £0.00 GBP.

Price Match Guarantee

If you find a lower price at an eligible UK retailer website, we will match it.

View full details

StopTech AeroRotor Replacement Kits (ARK) offer major benefits compared to original factory brake rotors. The AeroRotor vanes pushes up to 80% more air than factory rotors for better cooling and reduced fade. Designed for BMW F80 F82 F83 M3 & M4.

The 2 piece brake discs offers a significant improvement over standard, suitable for those who doesn't require a BBK. 

 

Typical OEM brakes are designed for cars with standard engines, performing routine tasks: the morning and evening commute, grocery shopping, driving the kids to soccer practice, etc. In other words, your OEM brakes can easily become overwhelmed.

Performance rotors are direct replacement discs for your factory brake system and stock calipers. They offer improved cooling as well as other advantages the OE rotors just don't offer.

Slotting and/or cross-drilling helps wipe away the debris that forms between the pad and the disc, adds more bite, and can help the rear brakes to match the aesthetics of a front big brake kit. The rotor finish helps prevent glazing of the pads and improves wet and dry braking performance.

 

Typical OEM brakes are designed for cars with standard engines, performing routine tasks: the morning and evening commute, grocery shopping, driving the kids to soccer practice, etc. In other words, your OEM brakes can easily become overwhelmed.

Performance rotors are direct replacement discs for your factory brake system and stock calipers. They offer improved cooling as well as other advantages the OE rotors just don't offer.

Slotting and/or cross-drilling helps wipe away the debris that forms between the pad and the disc, adds more bite, and can help the rear brakes to match the aesthetics of a front big brake kit. The rotor finish helps prevent glazing of the pads and improves wet and dry braking performance.

 

Advantages of a 2-piece rotor over a 1-piece rotor:

The primary purpose of 2-piece rotors is to reduce unsprung and overall vehicle weight. This is accomplished by using two-piece disc construction. The 2-piece design also allows for independent expansion of the rotor and hat without coning. The secondary purpose is to increase the ventilation and cooling capacity of the brake disc. Better airflow means better cooling and less fade.


The primary purpose of 2-piece rotors is to reduce unsprung and overall vehicle weight. This is accomplished by using two-piece disc construction. The 2-piece design also allows for independent expansion of the rotor and hat without coning. The secondary purpose is to increase the ventilation and cooling capacity of the brake disc. Better airflow means better cooling and less fade.


  • 2-Piece Rotors
  • Retains original dimensions
  • Better manufactured than factory OEM (upgrade)
  • Aero Vanes for better cooling
  • Slotted or Drilled
  • Optional anti-corrosion Zinc Coating

 

Pair of 2 piece front brake disc

 

BMW F80 F82 F83 M3 & M4 

Not compatible with carbon brake system.

 

81.B38.9911 Slotted Aero-Rotors (ARK)
81.B38.9921 Drilled Aero-Rotors (ARK)
81.B38.9931 Slotted Zinc Coated Aero-Rotors (ARK)
81.B38.9941 Drilled Zinc Coated Aero-Rotors (ARK)

 

Manufactured by

StopTech

 

Warranty

6 months or 6,000 motorway miles StopTech Warranty.

 

Dimensions

81-B38-9921 - 42cm x 42cm x 28cm

 

Weight 

81-B38-9921 - 23.4kg

  • Price Match Guarantee

    We are committed to giving you the best price. if you find a lower price on the same item at an eligible UK retailer website, we will match it.

  • Next Day UK Delivery

    For in stock items, get FREE Guaranteed next day UK delivery for orders over £199, excluding delicate items, larger items and certain remote postal codes/areas. Same day dispatch available if your order is placed before 1pm UK Time.

  • Worldwide Shipping

    We ship worldwide via DHL International, simply enter your full address at checkout to see the shipping option(s) and quote(s). Same day dispatch available if your order is placed before 1pm UK Time on all in stock items!