The DESC410R short course truck comes supplied with a small rear bumper which keeps the weight low and is the best option for fast lap times.   Some racers have asked for a full rear bumper for more heavy contact racing or where the rules state a full bumper is required.  The TD320141 rear bumper set for the DESC410R comes supplied in 4 parts which need to be trimmed from the parts tree.

The first task to fit the new rear bumper is removing the existing small skid plate bumper from the truck.  7 screws of varying sizes go through this part and it’s a good idea to put these to one side in order so you know where they go when it comes time to install the new skid plate.  The new plate itself is similar to the existing part but has mounting points for the new bumper.

New skid plate & old

You can assemble each part to the truck one at a time if you like but here we’ll assemble the bumper off the truck and then attach it as one part.

The main bumper part screws down to the new skid plate with four M3x12mm button head screws before an upper brace attaches to secure the bumper against the top of the rear bulkhead – again using M3x12mm screws.

The DESC410R full rear bumper is made to be light weight but hanging any large item off the back of your car is going to effect handling slightly and so to minimise the weight we’ve designed the bumper to have an optional lower bar at the rear for extra protection, or less weight without it – you choose.  Four M3x12mm screws attach the lower bar and there’s provision for 3rd party mud flaps if you want to go for even more scale looks.

The lower bar on the full bumper can be fitted for extra protection.

With the bumper fully installed it’s time to adjust the body to fit the new bumper.  The DESC410R full rear bumper set is designed to sit just inside the outer rear quarters of the body shell to protect the corners.To fit the body you have to cut a recess where the body will sit around the top bar of the bumper.  You can cut this with scissors or better yet a rotary tool with sanding drum as this will create a perfectly rounded recess – you don’t want any sharp corners in here as it could start to tear or deform with rear impacts.

See the above images for an example of how the body needs to be adjusted to fit.  Give the bumper some extra room to move around and upwards too – as heavy landings or impacts will flex the bumper so a little extra clearance is a good thing.

Now you can enjoy racing even when people are ramming into your rear bumper – as long as they stay behind it’s all good.