This are new oil shocks for the FTX Havok or HBX SG1603 / SG1604 that uses shocks that we've been selling for various Tamiya models for several years. with proven reliability. 

These shocks don't leak, they're aluminium bodied and thread adjustable. They're supplied pre-built and pre-filled with oil ready to fit & use with the new screws included.

We recommend using the outer mounting point holes (where there is more than one to choose from) as these shocks are just slightly longer than the originals, they will increase the ride height by about 2mm which is barely noticeable but gives a slightly increased ground clearance.

Please allow for the unlikely possibility of 1/ a slight difference in the shade of the main colour from one shock to another 2/ a +/- 5mm variance in size 3/ light surface marks from the manufacturing process 4/ slight residue oil from the filling process.