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Stone Exhaust

Stone Exhaust PP503S for Lexus RX (AL20, MK4) 2.0T 8AR-FTS - Valved/Valvetronic Rear Section Axle-Back Sports Exhaust - RX200t/RX300 (2015+) - OBD2 Plug-In Remote Controller, OPF Compatible, Back Box Upgrade, No Drone

Stone Exhaust PP503S for Lexus RX (AL20, MK4) 2.0T 8AR-FTS - Valved/Valvetronic Rear Section Axle-Back Sports Exhaust - RX200t/RX300 (2015+) - OBD2 Plug-In Remote Controller, OPF Compatible, Back Box Upgrade, No Drone

£2,521.92
£3,152.40 £2,521.92
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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

Stone Exhaust switchable valve system for Lexus RX AL20 2.0T - RX200t and RX300t - Part No. PP503S

Give your Lexus RX a serious uplift in tone, response and refinement with Stone Exhaust PP503S. This cat-to-tailpipe upgrade for the AL20 platform with the 8AR FTS turbo petrol engine delivers a deep, premium sound when you want excitement and near-OEM hush when you want comfort. It is a direct-fit, valve-controlled rear section system that keeps motorway cruising drone-free while unlocking a richer soundtrack for spirited driving. Perfect for drivers searching for Lexus RX sports exhaust, RX200t performance exhaust UK, RX300t valved back box, Lexus RX sound upgrade or active valve exhaust for the 2.0 turbo.

We have installed and used Stone’s valve-controlled systems ourselves and customer feedback has been excellent for build quality, plug-in control and everyday usability. If you want a Lexus RX exhaust that feels factory-plus not boy-racer, this is the one.

Key reasons to choose Stone PP503S

  • Designed for Lexus RX AL20 with the 8AR FTS 2.0 turbo petrol engine - RX200t and RX300t
  • Switchable valve control - quiet for commuting, aggressive for B-road fun
  • OBD2 plug-in controller with remote - ON, OFF and AUTO valve modes
  • Refined cabin with no annoying resonance - enjoy zero-drone cruising
  • One-piece construction with precision machine welding for durability
  • 3D scanned and reverse engineered for proper OEM-style fitment
  • Developed with in-house R&D and dyno validation for flow and tone
  • Part number: PP503S

Switchable valve control - three easy modes

Control your RX soundtrack at the touch of a button using the included OBD-II plug-in control unit and remote:

  • ON - valves open for a deeper, more purposeful note
  • OFF - valves closed for refined, neighbour-friendly running
  • AUTO - opens and closes the valves at your chosen RPM

No complicated wiring - simply plug into the OBD port and enjoy instant control of the exhaust valves.

OPF solution included

Includes an OPF delete option free of charge so OPF-equipped vehicles can run this system without triggering error codes. No ECU coding is required to remove OPF faults when using this solution.

Engineered for accuracy and longevity

  • OEM parts 3D scanned - improved flow paths and perfect alignment
  • 7-axis CNC bending - up to 98 percent roundness at tight bends
  • Crisscross and overlapping welds - increased penetration and strength
  • Direct spot welding via mechanical arms - consistent, clean results
3D scanning and reverse engineering for Lexus RX AL20 exhaust
7-axis CNC bending for precision pipework
Crisscross and overlapping welding for strength
Direct spot welding for accuracy and finish

Compatibility

Engine 8AR FTS

Chassis AL20

  • Lexus RX200t - 2015 onwards
  • Lexus RX300t - 2015 onwards

Warranty

Backed by a Stone Exhaust 2-year warranty for peace of mind.

Professional fitting

For the best results we recommend installation by specialists. MJ Modifications in Warwickshire offer expert fitting. Request a quote at info@mjmodifications.co.uk.

Part number

PP503S

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