RM-MI014-FIXED-S-330Regular price $3,599.00
The brake calipers start life as a piece of billet A6061 aluminium alloy that is heated to 450° then forged into the basic caliper shape in a press.
The excess material is removed then the calipers are CNC machined to the final shape on the Renmark factory floor.
Once machined the calipers go through a variety of checks including piston bore diameter, caliper centre width and mounting bolt hole diameter and true. The calipers then go into the paint shop where they are painted. Customers can choose from 20,000 Dupont paint codes so they can match the caliper colour to your vehicle.
The paint is baked at 200° to ensure durability. The factory can also finish the calipers in plated gold, chrome or titanium if you want to go for some serious bling. Before the calipers are assembled the pistons are checked for surface roughness, parallel, diameter of body and O-ring size.
Once assembled the calipers are connected to a high pressure air line and dipped in water to ensure they are leak-proof. The single-piece forged process reduced the weight of the caliper and increases strength. Even the caliper pad retaining bridge was designed to maximise caliper rigidity and is a substantial piece of aluminium that acts as an additional brace. Rigidity is important.
The brake discs are produced by casting the raw material at 300° then processing via a CNC lathe and milling machine.
The disc is zinc coated to prevent rust then checked for surface roughness, that the pad faces are parallel and true (runout), hardness etc. The bell is CNC machined from the same billet A6061-T as the calipers and then anodised black.
The bell and disc are assembled then checked for eccentricity to ensure the bell is centralised and for run out to ensure the disc runs true. The assembly is then checked for balance as you would do with a car wheel when a new tyre is fitted.
This ensures that there is no vibration at high speed or under braking and that the car runs as smoothly as possible.