Description

Brembo GT-M Big Brake Kit — BMW 340I / 340I XDRIVE GRANTURISMO (EXCLUDING M-SPORT BRAKES) (F34) 2017–2018 (Rear, 345×28 4-Pot)

Genuine Brembo GT-M/GT-S/GT-R 4-piston monobloc rear big brake kit engineered for the 2017–2018 BMW 340I / 340I XDRIVE GRANTURISMO (EXCLUDING M-SPORT BRAKES) (F34). Upgrade to Brembo’s 345x28mm 2-piece floating disc assembly for greater thermal capacity, reduced fade, and linear pedal feel on the street or the track.

Key specifications

Caliper family	Brembo GT-M (4-piston Monobloc)
Disc size	345 × 28 mm 2-piece
Bell material	CNC-machined 7075-T6 aluminium, hard-anodised black
Rotor patterns available	Drilled (standard), Slotted Type 1 (street/track), Slotted Type 3 (aggressive track — racing use only), Slotted Type 5 (racing use only)
Caliper colours	Black, Red, Silver, Yellow
Minimum wheel size	17″
Axle	Rear
TÜV/KBA	Not approved — contact AME for regional compliance
Road use	✓ Street legal

What’s included in this Brembo GT-M kit

• 2× Brembo GT calipers (colour of choice)
• 2× 2-piece floating rotors 345x28mm (LH + RH)
• 1× Brembo brake pad set (street-performance compound)
• 2× CNC-machined aluminium caliper mounting brackets
• 1× set of stainless-steel braided brake lines (DOT-compliant)
• Complete mounting hardware (bolts, washers, pins, clips)
• Brembo installation instructions (EN/IT)

Why upgrade to Brembo GT-M

• Greater thermal capacity: 345mm 2-piece floating rotor dissipates heat faster than OEM discs, delivering fade-free performance under sustained heavy braking.
• Stiffer, more linear pedal feel: 4-piston monobloc construction eliminates caliper flex, giving you the same pedal response on lap 1 and lap 20.
• Lower unsprung weight: 2-piece floating assembly reduces rotational mass by up to 22% per wheel vs stock single-piece OEM rotors.
• Italian OEM quality: Built on the same production line that supplies Porsche, Ferrari, and AMG performance models from the factory.
• 4 caliper colours: Match your wheel and interior accents with Black, Red, Silver, Yellow.

Fits: BMW 340I / 340I XDRIVE GRANTURISMO (EXCLUDING M-SPORT BRAKES) (F34) (2017–2018, Rear axle)

Designed as a direct upgrade for the OEM braking system on the 2017–2018 BMW 340I / 340I XDRIVE GRANTURISMO (EXCLUDING M-SPORT BRAKES) (F34).

• 2017 BMW 340I / 340I XDRIVE GRANTURISMO (EXCLUDING M-SPORT BRAKES) (F34)
• 2018 BMW 340I / 340I XDRIVE GRANTURISMO (EXCLUDING M-SPORT BRAKES) (F34)

Minimum wheel size: 17″ (recommended 18″ for optimal caliper clearance).

Installation

• Professional workshop fitment recommended
• Average install time: 2–3 hours per axle
• Tools required: standard caliper/brake tools + torque wrench + brake bleeding kit
• Brake fluid: DOT 4 (Brembo specification), bleed required after install
• Fitment partner network: AME Motorsport partners across Sydney, Melbourne, Brisbane — contact us for referrals

Frequently asked questions

Will this Brembo kit fit my 2017–2018 BMW 340I / 340I XDRIVE GRANTURISMO (EXCLUDING M-SPORT BRAKES) (F34)?

Yes — this 4-piston GT-M front kit is engineered specifically for the 2017–2018 BMW 340I / 340I XDRIVE GRANTURISMO (EXCLUDING M-SPORT BRAKES) (F34) rear axle at OEM ride height. If your car is lowered more than 25mm or has non-standard wheels under 17″, contact us first.

What’s the difference between GT-M, GT-S, GT-R?

All three use the same physical caliper body; they differ in internal piston size, pad compound, and rotor pattern. GT-M is the street-oriented base tier, while GT-S and GT-R add progressively more aggressive track capability.

Are brake pads included?

Yes — one set of Brembo street-performance brake pads is included. Optional upgrades to Pagid, Ferodo, or Schaffen compounds are available.

What brake fluid does Brembo recommend?

DOT 4 meeting Brembo’s specification (minimum dry boiling point 260°C). We recommend Motul RBF600 for street and RBF660 for track use.

Do I need wheel spacers?

No — all Brembo GT-M kits are designed to fit within OEM wheel offset and caliper clearance specifications for this fitment. A minimum 17″ wheel is required.

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