febi bilstein 21121 Brake Disc Set, 2 Internally Ventilated Front Discs

For replacing the front brake discs as a pair, the febi bilstein 21121 set contains two internally ventilated discs. It is a replacement part intended for the front axle, rather than a single-disc purchase.

The discs have an outer diameter of 283 mm and a thickness of 26 mm. The stated minimum thickness is 24 mm, a useful reference for maintenance decisions.

Vehicle fitment is the key point to settle before ordering. The supplied applications include various Citroën, DS, Opel, Peugeot and Vauxhall models, but the exact brake setup can vary by vehicle.

Best use cases

This set is relevant when both front discs need replacing and the vehicle’s original specification matches the dimensions and reference numbers given. Listed applications include models such as the Citroën Berlingo, C3 and C4, and the Peugeot 207, 308 and Partner. These names cover different versions, so a model name alone is not enough to establish a match.

The discs are internally ventilated and have an oiled and coated surface. That makes the product a specific replacement choice for a matching front-axle setup, not a universal disc for every car in the listed ranges. Worth considering if the vehicle identification and part references agree with the supplied details.

What you’ll notice day to day

In normal use, brake discs work with the brake pads to slow the vehicle through friction. This set’s practical distinction is its paired format: both front discs are included, which suits a job where the axle’s two discs are being replaced together. Compared with buying a single disc, it avoids sourcing the second one separately, though it is only useful if both sides require the same specification.

The product details give a 283 mm diameter, 26 mm thickness, 108 mm bolt circle diameter and 66 mm centring diameter. These are fitment details, rather than a promise of a particular stopping distance or quieter braking. Actual braking performance also depends on the wider brake system and correct installation.

What to know

There are four rim holes and two mounting holes. The stated minimum brake disc thickness is 24 mm, compared with the supplied new-disc thickness of 26 mm. The discs weigh 6.95 kg, and the surface is described as oiled and coated. OE reference numbers are provided for comparison, including 03557911 for Vauxhall and 4249.J6 for Citroën, DS and Peugeot.

The application list is broad and includes multiple generations and body styles. Use the vehicle identification details and compare the relevant OE number and brake dimensions before committing, the manufacturer also says to observe all fitment restrictions. It may not suit you if the vehicle’s exact specification cannot be confirmed. Brake repairs should be carried out by trained professionals, as advised in the product information.

Before you decide

Are two discs included? Yes. The item is listed as a set of two, for the front axle.

Will it fit every listed Citroën or Peugeot? Not necessarily. The vehicle and brake specification need to match, confirm using the vehicle identification and the supplied OE references.

Does the information include the disc dimensions? Yes. It states a 283 mm outer diameter and 26 mm thickness, alongside the bolt circle and centring diameters.

Buying verdict

Choose the febi bilstein 21121 when you need a matched pair of internally ventilated front discs and have verified the vehicle-specific fit. The dimensions and OE references make it easier to compare against the existing specification, but they do not replace a fitment check. If only one disc is required, or the vehicle details do not confirm a match, this two-disc set is not the right purchase to assume from the model name alone.