Big Brake Kit
XYZ Racing Hollow Front Brake Kit — Mercedes Benz GLA AMG 45 4WD X156 (2014-2020)
SKU: XYZ-BRK-BKF-ME-71-E-FRONT
- IncludesFront axle pair (2 discs + 2 calipers)
- PositionFront
- Disc Ø356–444 mm
- Caliper pots6 / 8 / 12-pot
- Lead time10–15 working days
Fits Mercedes Benz GLA AMG 45 4WD X156 (2014-2020)
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Caliper render for this kit:
The GLA 45 AMG is substantially heavier than the A45 hatchback it shares its M133 engine and 4MATIC drivetrain with, same turbocharged four-cylinder, but a raised crossover body and additional structure that push kerb weight well above 1,500kg in production form. That mass, combined with the engine’s genuine pace, means the factory front brakes work considerably harder than their A-class hatchback equivalents every time the GLA arrives at a braking zone. The XYZ Racing front brake kit for the Mercedes Benz GLA AMG 45 4WD X156 (2014-2020) addresses that load directly, fitting the front axle as a pair of discs and calipers calibrated to a performance crossover that gets used hard.
Three pad compounds, Street, Sport, and Racing, let owners configure the installation to their actual use case, from daily driving with occasional spirited runs through to circuit sessions where the GLA’s weight and performance test what is in the front corners.
What this brake kit does for your 2014-2020 Mercedes Benz GLA AMG 45 4WD X156
Front-axle brake load on the GLA 45 AMG is higher than the X156’s original design intent might suggest: the crossover’s raised centre of gravity pitches weight forward more aggressively under hard deceleration than a low-slung hatchback would. Two-piece floating disc construction, with its hollow-vane geometry, manages heat more effectively than solid discs, which matters on a 1,500kg-plus vehicle where brake fade is a practical consideration at a track day rather than a theoretical one. The floating ring expands without warping, and reduced rotating mass aids turn-in. The three compounds mean the kit works whether the car sees only occasional performance use or sustained circuit driving: Street stays quiet and low-dust, Sport opens up the heat range, Racing holds bite through a full session. Discs are offered drilled or slotted at the same price. Caliper colours, Red, Yellow, Gold, Black, and Anodized Black at no extra cost, with a custom Pantone match and premium polished-forged or candy finishes, allow the installation to sit cleanly behind the X156’s AMG alloy wheels rather than disappearing behind the spokes.
About the front brake kit
XYZ Racing’s two-piece floating disc promotes more consistent heat dissipation under sustained hard-braking cycles than conventional solid discs allow. The caliper is a hollow-body forging as standard, with an optional Hollow Racing caliper, no dust cover, rated to 1000C, two-year warranty, for circuit-focused use. The kit is supplied with a choice of three pad compounds: Street for quiet daily and mixed use, Sport for enthusiast fast-road driving, and Racing for track-day and circuit-focused applications. Caliper finish options run to Red, Yellow, Gold, Black, and Anodized Black, plus a custom Pantone match, giving the installation a visible presence behind open-spoke AMG wheels. Braided lines firm the pedal, and centre bell upgrades in five anodized colours or titanium are selectable at checkout. The range is developed for applications where OEM hardware becomes the limiting factor under sustained performance use, which for a high-output four-wheel-drive crossover of this weight arrives sooner than it would in a lighter car.
Fitment for the Mercedes Benz GLA AMG 45 4WD X156 (2014-2020)
This front brake kit is listed for the Mercedes Benz GLA AMG 45 4WD in X156 bodywork, covering the full production run from 2014 through 2020, which spans both the pre-facelift cars and the revised facelift models introduced mid-production. The kit is specified for the four-wheel-drive AMG 45 variant only. Confirm your exact year and chassis details before ordering if you have any uncertainty about mid-cycle running changes to front hub or caliper carrier dimensions.
What buyers also search for
- Mercedes Benz GLA 45 AMG front brake upgrade for track day and fast-road use
- X156 GLA AMG 45 4MATIC brake kit with Street, Sport, and Racing pad options
- GLA 45 AMG 2014-2020 big brake conversion compatible with AMG alloy wheel clearance
- Mercedes Benz GLA AMG 45 two-piece floating disc front brake kit for sustained high-temperature use
- XYZ Racing front brake kit for AWD performance crossover applications
Configure yours above, choosing the pad compound, disc style, and caliper colour that suit how the car actually gets used.
What’s in the kit
Front axle kit — supplied as a complete bolt-on assembly.
- 2×Two-piece floating discs — 356–444 mm: you pick the exact diameter with the "Disc size" option
- 2×Lightweight aluminium centre bells
- 2×Forged aluminium calipers — 6 / 8 / 12-pot
- 2×High-stiffness mounting brackets
- 2×Braided stainless steel brake lines
- 4×High-performance brake pads (1 set)
- 1×Fitting hardware & tools pack
Choosing your spec
Every kit is built to order around the choices you make above. Here is what each option actually changes, so you can spec yours with confidence.
Brake pads — Street, Sport or Racing
Every kit ships with a full set of high-performance pads; the compound is your call.
Street is the right default for fast-road driving — a strong, progressive cold bite with low noise, low dust and long disc life. Sport raises the working temperature and adds bite and fade resistance for hard road use and the occasional track day, while still behaving on a cold morning. Racing is a track compound built for sustained abuse: huge fade resistance and bite once heat is in it, at the cost of more noise and dust when cold. Match the pad to how hard you actually use the brakes — there is no benefit to a race pad that never gets up to temperature.
Caliper grade — Hollow vs Hollow Racing
Hollow is the standard caliper on every kit: a hollow-body forged caliper, lighter than a solid one, fitted with a dust cover and backed by a 5-year oil-leak warranty. For most fast-road and spirited track use it is all the caliper you need.
Hollow Racing is the track-grade upgrade. It runs the same hollow body but without a dust cover (so there is nothing to melt at sustained high temperature), uses a twin-metal piston that isolates heat travelling from the disc to the oil seal, and is rated to 1000°C. Available 286–380mm (front). Warranty is 2 years on oil leaks and 10 years on appearance. Built for professional racing and repeated track days.
Caliper colour & finish
Painted colours (Red, Yellow, Gold, Black, Anodized Black) are included at no cost. Want an exact match to your car? Custom Color (+£150) paints the calipers to any Pantone code you supply (15–20 day lead time).
Polished Forged finishes are the flagship: a forged caliper given a mirror-polished surface treatment that shifts colour with the viewing angle. Beyond the looks, the polished surface dissipates heat better, resists rust and stands up to the weather. Choose Titanium (neochrome, +£350), Polished Gold (+£300) or Polished Silver (+£250). They look their best paired with a titanium centre bell. Care: clean only with a dilute neutral cleaner or water.
Candy colours (+£200) use a deep candy-paint and polishing process for a mirror-reflection, boutique finish — pick Teal, Blue, Red or Orange (shown below right).
Centre bells
The centre bell is the CNC-machined aluminium hat that joins the disc to the hub. The standard anodized centre bell is included. The Two-tone bell (+£200) adds an anodized accent ring — choose Red, Yellow, Orange, Purple or Silver right here at checkout. The Titanium centre bell (+£500) is a forged titanium bell (bolts not included) that finishes off the polished-forged look.
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