PARAGON 2-Piece Rear Rotors
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PARAGON 2-Piece Rear Rotors – Mercedes-AMG A45 (W176) / CLA 45 (C117) – 330 x 22mm
These Paragon 2-piece rear rotors are a bolt-on replacement for the factory rear discs on the Mercedes-AMG A45 (W176), CLA 45 (C117) and GLA 45 (X156). The 330 x 22mm slotted rings float on lightweight aluminium hats, cutting unsprung weight by 23% compared with the OEM rotors while improving cooling and resistance to fade on track.
Choose a black hardcoat or clear hard anodised hat. Both perform the same; the clear hard anodised finish will not discolour under track heat, while the black dyed finish may discolour above 260°C.
Note: Works with the factory calipers, ABS and brake bias, and with OEM or aftermarket pads of the factory pad depth. Bed in the pads after fitting. Installation by a professional is recommended.
Features
- Floating 2-piece design with slotted friction face
- CM-250 high-carbon alloy cast iron rings with directional ventilation vanes – up to 30% cooler than OEM
- Heat-treated and CBN-machined; run-out ≤ 0.03mm and balanced within 2 g
- CNC-machined 6061-T6 aluminium hats, Type III hard anodised
- D-Bobbin (Short) 10-bolt mounting with anti-rattle clips
- 5.36 kg per rotor – 23% lighter than OEM
- Replaces OEM part no. 172-423-01-12 (1724230112)
Pairs Well With
- PARAGON 2-Piece Front Rotors – Mercedes-AMG A45 (W176) / CLA 45 (C117) – 350 x 32mm
- PARAGON 6-Piston Front Big Brake Kit – Mercedes-AMG A45 (W176) / CLA 45 (C117)
- DIXCEL Rear Brake Pads – Mercedes-AMG A45 (W176) / CLA45 (C117) / GLA45 (X156)
- DIXCEL Front Brake Pads – Mercedes-AMG A45 (W176) / CLA45 (C117) / GLA45 (X156)
- Xtreme-DI High-Pressure Fuel Pump – Mercedes-AMG A45 (W176) / CLA45 (C117) / GLA45 (X156) (M133 Engine)
Need help confirming fitment? Contact our team at sales@chicaneaustralia.com.au.
Vehicle Compatibility
| Make | Model | Chassis | Years | Engine / Notes |
|---|---|---|---|---|
| Mercedes-AMG | A 45 AMG | W176 | - | Rear axle |
| Mercedes-AMG | CLA 45 AMG | C117 | - | Rear axle |
| Mercedes-AMG | GLA 45 AMG | X156 | 2014–2018 | Rear axle |
Product
- Brand
- Paragon
- Rotor size (diameter x thickness)
- 330 x 22mm
- Hat finish options
- Black hardcoat (.01) or clear hard anodised (.02)
- Replaces OEM part no.
- 172-423-01-12 (1724230112)
- Part number(s)
- P2R.029.330.220.21700.08.01.01.R / .02.R
Details
- Position
- Rear
- Construction
- 2-piece floating, slotted face
- Ring material
- CM-250 high-carbon alloy cast iron, heat-treated and CBN-machined
- Hat material
- CNC-machined 6061-T6 aluminium, Type III hard anodised
- Rotor-to-hat mounting
- D-Bobbin (Short), 10-bolt, anti-rattle clips
- Cooling
- Directional ventilation vanes, up to 30% cooler than OEM
- Tolerances
- Lateral run-out ≤ 0.03mm; balanced within 2 g
- Weight (each)
- 5.36 kg (23% lighter than OEM)
- Sold as
- Pair
Contents
- 1 x pair of Paragon 330 x 22mm 2-piece rear rotors, assembled with hard anodised aluminium hats and hardware; installation manual.

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