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A closer look.  The shocks on the BX-1 are oil filled and feature plastic bodies with half-alloy top caps.  Two silicone o-rings are inserted from below and capped off with a plastic screw on retainer.  The shocks are filled from above, a diaphragm then tops this off to allow for volume compensation without letting the air and oil mix. 
Both front and rear shocks come pre-assembled with the 2-hole piston and some oil of unknown viscosity.  The 2 hole piston is the middle in the range of three supplied in the BX-1 box.  The other two pistons have the same hole diameter but either 1 or 3 holes to provide more or less damping. 

The damping as mentioned earlier is more geared for fun rather than handling prowess, the suspension is consequently bouncy and the chassis will hit the ground when the car lands from more than a few inches.

This could easily be helped by using the one-hole pistions along with some heavier oil, about 40wt all round. After the photos, this is exactly what I went for and the difference was definately noticable - the car felt a lot better for it, and this is what I ran on the car at CML Raceway.

The wheels are similar to those on the Kyosho ZX-5 and use a Hex pattern on all four corners.  The  BX-1 therefore has an array of available compatible wheels, ready and waiting from the likes of Kyosho, Academy, Tamiya and others.
Two tiny air holes are provided in each wheel, this lets air escape from the tyre when the tyre deforms on rough terrain.  The holes are too small to be very effective however and probably do little to help the cars bouncy nature over rough ground.   A bigger hole would help the tyre deform to the surface and absorb hits with more composure.

The included tyres are like those supplied in Academy kits among others, and are labled “Grand Prix – Fusion”.  The tyres are a micro-block style tread pattern and are quite soft.  Foam-strip inserts are supplied and pre-installed. 
The only thing left to do is to glue the tyres to the rims.  No glue is provided but any CA (super glue) will do.  A thin bead around the edge of the rim on both sides, should be enough to keep the tyres in place with the supplied motor.  I ran the car box-standard before gluing the tyres and one rear tyre came partially off the rim, so this is a step best not forgotten.

Gluing the tyres
"Grand Prix - Fusion" tyres
Rim holes are small but can be reamed out

Fantastic plastic.
  The majority of the plastic on the BX-1 follows a simple premise – soft and bendy.  This is a good feature on a car like the BX-1, the parts can absorb heavy impacts without transferring the stress to something which might break - certainly a good idea for the beginner.  I first noticed this when the car was still in the box, touching the rear wing would move the rear shock tower – now that’s soft!
The chassis is similarly soft, but braces stifen things up plenty.

To further protect the car from possible breakages front and rear bumpers are attached. The rear bumper also acts as a neat carry handle.


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