Light Vehicle Modifications
Need light vehicle mods approved on the Sunshine Coast? Approved Mods provides engineering certification for all Queensland light vehicle modification codes (LA–LX) and these are detailed below. Whether it’s a suspension lift, engine swap, or brake upgrade, we can inspect, assess, and issue your modification plate (blue plate) so you stay compliant and legal on the road.
Learn more about our Approved Vehicle Services or contact us to book your inspection today.
For official information, see the Queensland Department of Transport and Main Roads (TMR) website.
Note: Some of these codes require significant testing and engineering works and we reserve the right to not undertake this work.
Engine upgrades
We certify engine swaps, performance upgrades, and forced-induction systems to ensure full ADR and emissions compliance.
LA1: Equivalent engine installation
LA2: Performance engine installation
LA3: Supercharger and turbo charger installation
LA4: Engine modifications
Transmission & driveline mods
We inspect and certify gearbox substitutions, driveline changes, and differential upgrades for safety and compliance.
LB1: Transmission substitution
LB2: Rear axle substitution
Driver control modifications
We assess and approve dual-control and disability control systems, ensuring they meet Queensland light vehicle standards.
LC1: Dual-controls for driver trainer vehicles (design)
LC2: Dual-controls for driver trainer vehicles (modification)
LC3: Vehicle controls for persons with a disability (design)
LC4: Vehicle controls for persons with a disability (modification)
Brake system mods
We test and certify brake conversions, upgrades, and auxiliary systems to meet Queensland safety standards.
LG1: Brake system conversion (design)
LG2: Brake system conversion section
LG3: Relocation of air brake components
LG4: Non-Standard brake system certification
LG5: Fitting of Auxiliary and Endurance Brakes
LG6: Fitting of air operated accessories
Body, chassis & 4WD conversions
We provide engineering certification for chassis alterations, 4WD conversions, and camper or custom body builds, ensuring full compliance and blue-plate approval.
LH1: Roof conversion (design)
LH2: Roof conversion
LH3: Modified wheelbase conversion (design)
LH4: Modified wheelbase conversion
LH5: Vehicle construction (design)
LH6: Vehicle construction
LH7: Body/chassis variants conversion
LH9: Street rod certification (concessional)—find out more in the QCOP
LH10: Street rod certification (full)—find out more in the QCOP
LH11: Campervan, motorhome conversion section
LH13: Chassis Alteration (Design Certification)
LH14: Chassis Alteration (Modification Certification)
Seats, belts, roll cages
We certify seatbelt installations, roll cages, and child restraint anchorages under the Queensland modification codes.
LK1: Seat and seatbelt installation/removal
LK2: Seat and anchorage certification
LK3: Wheelchair Accessibility
LK6: Child restraint anchorage installation
LK8: Construction and installation of one-off roll-bars and roll-cages by individuals
LK9: Design and manufacture of commercial aftermarket roll-bars, roll-cages and other types of roll-over protection systems (ROPS)
LK10: Installation of aftermarket roll-bars, roll-cages and ROPS section
Motorcycles modifications
We approve motorcycle and trike modifications, including handlebar, frame, and lighting upgrades.
LL1: Modifications to motorcycle (LC) to motor tricycle (LEM1)
Fuel Systems – Section LM
We inspect and certify replacement or custom fuel tanks and fuel systems for safety and compliance.
LM1: Fuel tank installation section
ADR Compliance
We assist with ADR compliance and certification for imported, modified, or individually constructed vehicles.
LO1: ADR compliance
LO2: ICV passenger cars and derivatives
LO3: Personally imported vehicle compliance
LO4: ICV LEM1 tricycle
LO5: ICV LEP1 tricycle
LO7: ICV motorcycle
Vehicle Mounted Lifting Systems
We certify vehicle-mounted cranes, hoists, and hydraulic lifts, ensuring they meet TMR safety standards.
LR1: Installation of Vehicle Mounted Lifting System
Suspension lifts and steering changes
We approve lift kits, GVM upgrades, and steering conversions, including design certification up to 150 mm total lift.
LS1: LHD vehicle steering conversion (design)
LS2: LHD vehicle steering conversion
LS3: Front suspension and steering modification (design)
LS4: Front suspension and steering modification
LS5: Rear suspension modification (design)
LS6: Rear suspension modification
LS9: High lift – up to 150mm (design certification)—find out more in the QCOP
LS10: High lift – up to 150mm modification certification—find out more in the QCOP
LS11: Gross vehicle mass re-rating—find out more in the QCOP
LS12: Light trailer modifications—find out more in the QCOP
LS14: Re-rating of Aggregate Trailer Mass (ATM)/Gross Trailer Mass (GTM) of a light trailer to manufacturer’s specifications—find out more in the QCOP
LS15: Gross vehicle mass rating of light vehicles—find out more in the QCOP
LS16: Gross combination mass re-rating—find out more in the QCOP
Engineering test verification
We conduct torsion, emissions, lane-change, and noise testing for modifications that require performance validation.
LT1: Beam and torsion tests
LT2: Lane change manoeuvre test
LT3: Exhaust emissions – IM240 test
LT4: Noise test
Electric conversions
We certify electric and hybrid drivetrain conversions, ensuring compliance with electrical safety and ADR requirements.
LV1: Installation of electric drives in motor vehicles
Department-assessed modifications
For modifications outside the QLD Code of Practice, we prepare engineering reports and supporting documentation for direct TMR assessment.
LX1: Modification of light vehicles to the Department of Transport and Main Roads individual approval
