Traxxas 3949X 19T Hardened Steel Pinion Gear (32 pitch) HG-138 Grenade Launcher The 4500 PSI Reg has

The 4500 PSI Reg has a flow restrictor on the inlet supply (cylinder to reg) to reduce the chance of blowing the low pressure burst disc

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Construct by Stainless Steel for reduced friction & low abrasion

Measures battery voltage precisely

Upgraded POM CNC 8 hole piston head for better seal and helps create better air expand for your o-ring

Traxxas 3949X 19T Hardened Steel Pinion Gear (32 pitch) HG-138 Grenade Launcher The 4500 PSI Reg hasGear, 19 T pinion (32 p), heavy duty (machined, hardened steel) set screw Traxxas pinion gears let you fine tune the performance of your Traxxas model. Changing gear ratios can help balance acceleration and top speed for different running conditions. Please consult your owners manual for more information on recommended gearing options for your specific model. Accessory part for these models: Rustler 4X4 VXL Rustler 4X4 Slash 4X4 Ultimate Slash 4X4 VXL