15 Products
Your Current Vehicle
Or
Select Your Vehicle
Choosing exterior accessories responsibly
An exterior accessory becomes part of the vehicle's physical envelope. It experiences rain, ultraviolet light, salt, airflow, vibration, washing chemicals and impact. Good fitment means more than matching a photograph: the part must attach to the correct structure and remain clear of safety, lighting and sensor systems.
Accessories that alter appearance can also affect aerodynamics, noise, corrosion and insurance description. A small component needs the same disciplined installation approach as a larger guard or carrier.
Selection and installation sequence
- Define the function and confirm that the accessory is legal for road use.
- Identify exact vehicle body, build date and installed options.
- Check mounting surfaces, hidden wiring, sensors and drainage paths.
- Confirm supplied hardware, load limits and required tools.
- Trial-fit without damaging paint or removing protective liners.
- Install at the stated temperature, torque and curing time.
- Inspect security, clearances and vehicle functions before driving.
Accessory groups
| Group | Typical purpose | Primary risk to check |
|---|---|---|
| Mud flaps and guards | Reduce spray and stone impact. | Tyre clearance, ground contact and secure arch mounting. |
| Wind deflectors | Alter airflow around partially open windows. | Window anti-trap operation and clip position. |
| Trim and sill protection | Protect surfaces or change appearance. | Adhesion, trapped moisture and sharp edges. |
| Exterior lighting | Add work, marker, fog or styling illumination. | Legal colour, position, approval, wiring and glare. |
| Mirror and camera accessories | Protection or supplementary view. | Obscured field, vibration and sensor interference. |
| Guards and bars | Protect body or carry mounted equipment. | Pedestrian safety, airbag sensors, structure and projections. |
Attachment methods
- Pressure-sensitive adhesive: needs compatible surface energy, pressure and cure conditions.
- Mechanical clips: must engage designed edges without overstressing trim or glass.
- Existing fasteners: may not have spare clamp length or load capacity.
- Through-bolts: need sound structure, sealed holes and corrosion protection.
- Rivets/rivnuts: require correct grip range and protected drilled edges.
- Magnets: depend on clean steel surfaces and can abrade paint.
- Suction fittings: need smooth surfaces and frequent security checks.
Materials and weathering
| Material | Benefit | Service concern |
|---|---|---|
| ABS plastic | Rigid, mouldable and paintable. | Impact, UV ageing and stress at overtight fixings. |
| Polypropylene | Tough and flexible for guards and flaps. | Low surface energy needs suitable adhesive preparation. |
| EPDM rubber | Weather-resistant flexible protection. | Oil contamination and unsupported weight cause distortion. |
| Stainless steel | Strength and corrosion resistance. | Grade, finish, sharp edges and galvanic contact matter. |
| Aluminium alloy | Low mass and workable construction. | Salt corrosion and isolation from steel fasteners. |
| Acrylic/polycarbonate | Clear or tinted aerodynamic shields. | Solvent cracking, scratches and brittle mounting points. |
Adhesive installation
Surface preparation
Paint must be sound, fully cured and free from wax, silicone and oil. Use only cleaners compatible with paint, plastic and glass. Aggressive solvent can haze trim or weaken coatings.
Temperature and cure
Adhesive flow and bond development depend on temperature. Applying tape to a cold damp panel creates weak contact. Heating must be controlled so paint and plastic are not distorted.
Placement and pressure
Use reference points and masking guides before exposing all liner. Apply uniform pressure across the bond. Repositioning after contact can tear adhesive and reduce long-term strength.
Electrical accessories
| Check | Why it matters | Good practice |
|---|---|---|
| Circuit load | Wiring and module outputs have limits. | Use a fused relay or approved interface where required. |
| Water sealing | Exterior connectors face spray and salt. | Use rated connectors, seals and drip-free routing. |
| Cable protection | Sharp panels and hinges cut insulation. | Use grommets, conduit and proper strain relief. |
| Vehicle monitoring | Added loads can trigger faults or damage drivers. | Use compatible control modules and coding. |
| Earth path | Poor grounds create heat and erratic operation. | Use protected approved grounding points. |
| Switching logic | Road lighting functions have defined operation. | Follow applicable rules and vehicle diagrams. |
Vehicle compatibility
| Vehicle detail | Possible difference | Evidence |
|---|---|---|
| Body style | Panel length, door count and mounting points. | Exact derivative. |
| Facelift/build date | Bumper, lamps, mirrors and trim profiles. | VIN-derived date and visual comparison. |
| Trim level | Factory skirts, chrome, cameras or sensors. | Installed equipment list. |
| Wheel/tyre package | Mud-flap and arch clearance. | Full steering and suspension movement. |
| Driver-assistance sensors | Radar, ultrasonic and camera field. | Vehicle repair information. |
| Tow bar/roof equipment | Shared structure and rear clearances. | Existing accessory instructions. |
Aerodynamics, loads and operating limits
External parts experience force that rises rapidly with speed. A lightweight deflector can load its fixings significantly on a motorway. Protruding accessories also alter wind noise and fuel use. Never exceed stated speed or load limits, and remove temporary equipment when conditions exceed its rating.
An accessory attached to a roof, tow bar or body trim does not increase the vehicle's legal axle, roof or gross weight. Load security and dimensions remain the driver's responsibility. Moving parts need clearance through steering, door, tailgate and suspension travel.
Cleaning, paint protection and corrosion control
Dirt trapped beneath guards, badges and magnetic fittings acts as an abrasive. Remove serviceable accessories at the interval stated, clean both surfaces and inspect paint before refitting. Pressure washers should not be aimed into lifted adhesive edges, unsealed electrical connectors or camera openings. Strong alkaline cleaners can stain aluminium and remove protective waxes.
Any drilled or cut metal edge needs an approved corrosion system before hardware is installed. Dissimilar metals should be isolated where galvanic corrosion is possible, while drainage holes must remain open. Protective film can reduce rubbing but needs compatible adhesive and edge placement. Rust streaks, bubbling paint or swelling around a fixing indicate that water is already entering and should not be hidden under new trim.
Inspection and fault signs
- Check fasteners, clips and adhesive edges after initial use.
- Look for paint rubbing, cracks, corrosion and water trapped behind trim.
- Operate windows, mirrors, doors, cameras and sensors.
- Check lights for function, colour, aim and warning messages.
- Inspect cable entry points and fuse condition.
- Confirm number plates and required lamps remain fully visible.
- Remove any part that has become loose or sharp.
Seasonal use and temporary accessories
Winter conditions add salt, ice and low-temperature brittleness, while summer sunlight raises panel and adhesive temperature substantially. Seasonal accessories should be cleaned, dried and inspected before storage so corrosion and mould do not develop unseen. When refitted, old adhesive pads, stretched straps and rusted clips should be renewed rather than trusted for another season.
Wedding decorations, event signage, flags and temporary lights are still subject to security and visibility requirements. Ribbon can enter fans or wrap around axles; flags create high wind load; magnets can move on curved aluminium or plastic panels where they have little or no attraction. Plan attachment and removal before travelling, check after the first few miles and stop immediately if noise or movement changes.
Common mistakes
- Ordering by model name while ignoring body and facelift.
- Applying adhesive over wax, moisture or cold paint.
- Drilling before checking hidden wiring, airbags and drains.
- Using self-tapping screws in thin unsupported trim.
- Obscuring a lamp, plate, camera or radar sensor.
- Adding electrical loads without fuse protection.
- Routing cable through a door seal without strain relief.
- Assuming bright added lights are road legal.
- Ignoring sharp edges and pedestrian contact areas.
- Failing to declare material modifications.
UK road legality, MOT and insurance
Accessories must not create dangerous projections, obscure the driver's view, registration plates or mandatory lighting, or interfere with safety systems. Added lights need appropriate colour, position, switching and approval. Decorative lighting suitable only off road should remain off and covered or removed where required.
MOT inspection can identify insecure components, obscured plates, lighting defects, visibility problems and dangerous body condition. A pass does not approve every modification. Tell the insurer about changes that alter appearance, performance, value, dimensions or risk as required by the policy.
Exterior accessory FAQs
Q: How do I check an accessory fits?
A: Match body style, build date, trim and installed sensors as well as the model name.
Q: Can adhesive trim be fitted in cold weather?
A: Only within the adhesive's specified surface and ambient temperature range.
Q: Should body holes be drilled?
A: Only when instructions require it and hidden systems, sealing and corrosion protection are addressed.
Q: Can added lights use any colour?
A: No. Road-lighting colour, position and operation are regulated.
Q: Will an accessory affect parking sensors?
A: It can obstruct or reflect their field; confirm clearance and operation.
Q: Are magnetic accessories safe at motorway speed?
A: Only within a documented rating on a clean compatible surface and with regular checks.
Q: Can a roof accessory increase payload?
A: No. Roof, axle and gross limits remain unchanged.
Q: Why is adhesive lifting?
A: Contamination, cold application, poor pressure, curvature or wrong tape may be responsible.
Q: Must modifications be declared?
A: Material exterior changes should be disclosed as required by the insurance policy.
Q: Can accessories cover number-plate edges?
A: They must not obscure required characters, margins or visibility.
Q: How often should fixings be checked?
A: After initial installation and regularly according to use, weather and instructions.
Q: Can a loose accessory be taped temporarily?
A: Remove or secure it using an approved method before driving.
Q: Can exterior accessories affect the MOT?
A: Yes, through security, lighting, visibility, plate or dangerous-body defects.
