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Underbody Protection for Mazda BT-50 2020 – 2025 | Bash Plates New Model!!

$320.00$899.00 Inc. Gst

Suitable for Mazda BT50 2020 – 2025; 2 & 3 Piece Underbody Protection – Bash Plate Set

FAST SHIPPING: Items in stock will ship within 3-4 days, while items that need to be cut may require up to 7 days!

Product Update – 20-07-2021 New style front plates

Fitting: From $50 at Sumner Park (fitting is paid on the day of fit up)

3mm 3 piece Stainless Steel: $699.00      29kg

4mm 3 Piece Stainless Steel: $899.00      37kg

Type 1 – Original style, tested with stock bumper, Arb, Tjm,  MCC Falcon

Type 2 – New Style tested with Hamer bar, Ironman, Opposite lock, AFN and BT-50 Thunder

Offroad Animal – They have changed their bars please contact us with photos. 

Piak Bar – Sump and transmission only

Diff Drop – Fits with PSR, Munji

New bolts supplied, Fits with ARB Recovery points, havent has any issues with any other barnd. 

This Product is designed and manufactured by Custom Offroad Accessories Pty Ltd


Download Assembly Diagram


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Frequently Bought Together

Bt-50 bash plate underbody protection uvp skid plates + provent oil separator kit2 + preline plus pre filter1
Price for all three: Original price was: $1,919.45.Current price is: $1,727.50. Save $191.95


Our Mazda bash plates will fit all models in the NEW SHAPE 2020 – 25  Bt-50 range. The plates have been designed to use the existing holes that the standard plates bolts to and to work with all Bull Bars.

  • Plates are supplied with our Custom Offroad Logo
  • Available in  3mm Stainless Steel for the best protection possible 4mm if you like to Drive Hard
  • Australian Made, all our plates are made right here in Brisbane!
  • 3 Piece Front, Diff/Sump and Transmission
  • Replace the 1.5mm standard tin plates.
  • Slim Design for maximum clearance, no modifications and only 15 mins to fit.
  • New Bolts Supplied
  • Fits with Munji Diff Drop
  • Fits With out a bull bar
  • Specials, deals and competitions are posted on our Facebook and Instagram page. Search ‘Custom Offroad Accessories’


Fitting Instructions

Additional information

Plate Selection

3 Piece Kit Front, Sump/Diff and Transmission Transfer, 2 Piece Kit Front and Sump, Transmission Plate Only


Stainless Steel


3mm, 4mm

Front Plate Type

Not Applicable, Type 1, Type 2

12 reviews for Underbody Protection for Mazda BT-50 2020 – 2025 | Bash Plates New Model!!

  1. Ryan (verified owner)

    Great product, well made and fits perfectly. Installation was easy

  2. Nathan (verified owner)

    Great product looks great , well designed keep me updated of product quick shipping very well priced for the product I received

  3. Simon (verified owner)

    Great product and fantastic customer support, very helpful. Great to support an Australian made product.

  4. Trent (verified owner)

    Quality product. Simple fitment. Fast postage. Good communication. Would gladly purchase again. Cheers Matt!

  5. Scott Wiebe (verified owner)

    What a quality product! Easy to install and provides the best protection. I spoke to Matt a couple of times and delivery to Sydney was all to easy. 💯 recommend to anyone thinking of getting them…. Totally worth it.

  6. Paul G

    Great product, well made and fits perfectly. installation was quick and easy.

  7. Luke (verified owner)

    Super good product, paint looks mint. Only downfall I’d say is if you don’t have general knowledge with mechanic skills it’ll be a bit frustrating, the instructors weren’t quite clear. Other than that I’d definitely recommend 👌

  8. Shane Bawden (verified owner)

    Excellent product speedy delivery and easy fitment

  9. Bret Bowman (verified owner)

    Outstanding service and a great product, the plates fit well and look great. I dropped into the factory and they had them fitted in 30min great bunch to talk too.

  10. Craig (verified owner)

    Great service, emails were responded to super fast. Fast shipping to Tas,,
    Bash plates fitted fitted perfectly!!!!

  11. Lee (verified owner)

    Great quality, quick shipping and does what its meant to do

  12. Jamie Pollock

    Fast service. Great quality product. Fits perfectly. Highly recommended

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With your purchase of the Stainless Steel plates, make sure the plates fit before removing the protective film. If your plates don’t fit or have any other problem, the protective film needs to stay in tacked in order to receive a replacement set or a refund.

We have included a variety of bolts, and across the year ranges the bolt holes remained the same but the bolts may have changed. The bolt threads in the chasee are 1.25 fine pitch thread. The 30mm M10’s supplied with nut plates are a standard thread not to be used in the chassis. This will only be valid with three piece sets, not for two piece sets.

Front and Sump Plates

Start with the sump plate (start with trans plate if 3 Piece kit). This will go directly under the motor. The back of the plate will share the bolts with the front of the transmission plate. When installing the front plate, line up the back of the plate with the front of the sump plate and use the same bolts. This will line the front of the plate to the existing holes. Always overlap front to back.

Transmission Plate

Nut plate needs to be inserted inside the transfer cross member to give a thread for the transmission. The transmission plate will share the bolts of the sump plate and will use the 2 x 30mm M10 bolts to connect plate to the nut plates.

Download Fitting Instructions
  • Many enthusiasts consider the thicker the plate the better! This is true to a point but what some “experts” don’t consider is when your plates sustain a hit the pressure and shock has to be absorbed somewhere. If the plate has no flex what so ever the shock is then put back into the mounts which are welded to your chassis. It is much easier and cheaper to replace bash plates after a few years rather than repairing your mounts or chassis!

    We offer a range of thicknesses based on your preference, vehicle and type of 4 wheel driving. With plates ranging from 3mm to 4mm for the more common dual cabs through to 4mm standard for heavier vehicles.

  • After countless 4wd trips the one thing I kept replacing the most was my underbody protection. Although they did get a good beating the main problem was the rust factor, especially from my love of beach driving.

    My car would look great all polished and washed except for underneath that was bent out of shape and covered with surface rust. I designed a set out of stainless steel because of the resistance to corrosion and the strength to get a better, more durable life out of my bash plates.

    The stainless steel comes in a 2b matte grey finish which holds up great against scratching and with the extra strength of the stainless I’ve tried my best to knock them out of shape with no success. If you are after a bash plate that you would like to put on and not have to change every 6 months stainless is the way to go.

  • Built using qulaity stainless steel, our Bash Plates provide the perfect weight to strength ratio for your 4×4. As each Make and Model is different so too is the weight of each plate. However, as a general rule, a 3 piece set of 3mm thickness, usually weighs between 24kg & 30kg, while a 3 piece set of 4mm thickness, usually weighs between 35kg & 40kg.

    Please consult the product page of the vehicle you’re interested in for an accurate weight for those Bash Plates.

  • Our aim is to consistently maintain our stock levels so that we can get our plates to you as soon as poosible. However, in the event your plate is unavailable, the turnaround is generally between 1 to 2 weeks. This timeframe is well below the industry average as our plates are made right here in Brisbane, Australia!

  • Our plates are designed to fit with a large range of bull bar setups. If your 4WD currently retains the factory plates, and has a bull bar installed, then our plates will fit. The majority of our bash plates support a diff drop, however, we advise you consult the individual product pages for more information regarding the make and model of the 4WD you wish to fit plates to.

  • In a market saturated with an endless list of must have upgrades for your 4×4 often underbody protection is overlooked. Vehicle manufactures do not consider bash plates essential to the performance of the car even though they are producing cars for offroad use.

    Over the years, the market has seen a shift away from the older live axle cars to the more comfortable riding independent front suspension “IFS”. Whilst making the car more pleasant to drive this means vital components such as the radiator, sump, diff actuator and transfer case become more vulnerable.

    Vehicle owners are often unaware or reluctant to invest in bash plates as they consider their offroading to be tame or “only beach use”. Some of the worst damage we have seen to the underside of cars has been sustained on the beach navigating a cutting or hitting a washout at speed. Often the damage will render the car un-driveable with split radiators or damaged actuators making the car 2wd.

    Bash plates should be one of the first modifications carried out before heading offroad. The damage that can occur, the cost of recovery and repairs vs the purchase price is a simple equation.