The Rock Beast Scale 1

The result speaks for itself: impressive performance

Some M4 were also fitted with applique armor bolted later on for extra defense

the actual 3363 can haul up to 250 tons

Four bumper mounting positions

Exotek Racing - F1 Ultra HD Steel Rear Axle COR00182 The Rock Beast Scale 1Optional heavy duty steel ball diff axle for the F1Ultra. 1 piece shaft for maximum durability that also provides extra rear weight (shafts weighs 26gr) for more traction in low grip conditions. The shaft is solid on the right side and hollowed on the left side to help balance the rear pod. Alloy diff ring mount that's a direct fit for the F1Ultra stock ball diff. Not compatible with Xray F1 etc.