Pro-Line X-MAXX Sling Shot 4.3″ Pro-Loc Sand Tyres & Dual Rate Springs


Pro-Line have introduced new Sling Shot 4.3” Pro-Loc paddle tyres and a dual rate spring assortment for the Traxxas X-MAXX. First up are the Sling Shot 4.3” Pro-Loc paddle tyres well known for having an incredible scale paddle tyre appearance combined with unbelievable Sand and Snow performance. These tyres have been developed from the ground with an all-new ultra-durable compound that prevents tire ballooning even at high speeds. The Sling Shot 4.3” tyre features Pro-Line’s ground breaking proprietary Pro-Loc Technology that creates an ultra-secure bond to Pro-Line’s Impulse Pro-Loc X-MAXX wheels while still being removable when required. The reinforced tyre bead fits into a uniquely shaped channel on the wheel and the bead-loc screws actually pass through the tyre rubber before being pinched by the outer bead-loc ring to create the maximum possible mounting security. Sling Shot 4.3” Pro-Loc paddle tyres are available including closed cell foams.


Next up a dual rate spring assortment specifically developed for X-MAXX’s shocks. The spring assortment pack includes a pair each of Soft (Green), Medium (Yellow) and Firm (Red) upper and lower springs that can be mixed and matched to give you tons of tuning options. The main benefit of using dual rate springs is that you can have a softer initial combined spring rate for gliding over the small choppy bumps, but then transition to a much firmer rate once the Upper Spring is collapsed to absorb the big hits. The spring separator is custom machined from black Delrin for smooth sliding action over the shock body and the shoulder is offset so upper spring collapses consistently for proper performance. The upper springs are black and the lower springs are bright Zinc coated for a chrome-like finish.

  • Upper spring rates: Soft (Green) = 1.0 kg/cm, Medium (Yellow) = 1.2 kg/cm, Firm (Red) = 1.4 kg/cm
  • Lower spring rates: Soft (Green) = 1.4 kg/cm, Medium (Yellow) = 1.7 kg/cm, Firm (Red) = 2.0 kg/cm