Hella PRO High Carbon 340mm 2-Piece Slotted & Dimpled Vented Coated Performance Brake Disc - 8DD 355 120-821 (HELLA-8DD355120821)

Hella PRO High Carbon 340mm 2-Piece Slotted & Dimpled Vented Coated Performance Brake Disc - 8DD 355 120-821 (HELLA-8DD355120821)

£135.13
£135.13
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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

Hella PRO High Carbon 340 mm Two-Piece Slotted and Dimpled Brake Disc

Upgrade your stopping power with the Hella PRO High Carbon brake disc, part number HELLA-8DD355120821 (also referenced as 8DD 355 120-821). This premium, two-piece, internally vented, slotted and dimpled brake disc is engineered for consistent, confident braking, excellent heat management and reduced judder. Perfect for fast road and performance use, this coated high-carbon disc delivers strong bite, improved thermal stability and long-lasting corrosion protection.

At Nforcd we have fitted these discs for customers and on our own builds, and the feedback has been excellent for pedal feel, fade resistance and overall braking confidence. If you are searching for a genuine Hella performance brake disc upgrade in the UK, this is the one to choose.

Why choose this Hella PRO High Carbon brake disc

  • High-carbon metallurgy for superior thermal stability and reduced brake judder
  • Two-piece construction for improved heat dissipation and weight optimisation compared to one-piece discs
  • Slotted and dimpled friction faces for strong initial bite and consistent performance
  • Internally vented design to manage heat under repeated heavy braking
  • Coated surface for corrosion resistance and cleaner appearance behind your wheels
  • Genuine Hella quality you can trust, ideal for performance road cars and spirited driving

Key search terms

Hella PRO High Carbon brake disc 340 mm, Hella 8DD 355 120-821, HELLA-8DD355120821, 8DD355120821, slotted and dimpled brake disc, internally vented brake disc, two-piece brake disc, coated brake disc, performance brake disc UK, high carbon brake disc, 340 mm brake rotor, PCD 120 brake disc, 79 mm centre bore brake disc, upgraded brake discs, replacement brake disc Hella.

Technical specifications

Product line PRO High Carbon
Brake disc type Two-piece, slotted, internally vented, drilled dimples
Diameter [mm] 340
Brake disc thickness [mm] 30
Minimum thickness [mm] 28.4
Height [mm] 73.2
Centering diameter [mm] 79
Bolt hole circle [mm] 120
Hole arrangement / number 05/06
Surface Coated
Machining High-carbon
Weight [kg] 10.1
Technical information number 65145PRO_HC
Supplementary info Without wheel studs, without wheel hub

Compatibility and fitment

Please double check vehicle compatibility using our product recommender before ordering. If you are unsure, our knowledgeable team will confirm fitment prior to dispatch.

Professional fitting recommended. For expert installation at Nforcd in Warwickshire request a fitting quote at Sales@nforcd.com.

Part numbers

Manufacturer: Hella

Main part number: HELLA-8DD355120821

Reference: 8DD 355 120-821

EAN: 4082300513844

Buy with confidence from Nforcd

Genuine Hella hardware, performance-focused specification and proven results. Order your Hella PRO High Carbon 340 mm brake disc today for a precise, durable and confidence-inspiring braking upgrade.