and detachable roll hoop to protect the engine. Savage X SS A variation on the Savage X, the Savage X SS, has a .28ci (4.6cc) engine that has 10% more displacement than the S-25 Model. The Savage X SS also features a hardened steel spur gear, chromed dog bones and 6 gear spider diffs for enhanced drivetrain durability to cope with the extra power of the .28 engine. With this engine the SS version will easily pull wheel stands and an optional wheelie bar is available for the Savage to prevent it from flipping over backwards under hard acceleration. Savage X 4.6 At the end of summer 2007, HPI released the Savage X 4.6 RTR. This model features the Force Engine-made F4.6 motor. The new F4.6 motor retains the reliability of HPI's motors while adding more power, though it is not as powerful as the K4.6. The driveline has been upgraded with new alloy differential cases, reversion to the more reliable 21/25-style slipper clutch, and a dual fiberglass brake disc kit. The clutchbell is now a 17 tooth unit. In 2011, HPI released a newer model of the Savage X 4.6. With all of this power and durability, the jumping ability of the Savage X 4.6 is unsurpassed by any other monster truck. With a top speed of over 45 MPH, hitting a ramp with something this size must be seen to be believed! Savage XL Released in April 2008. This Savage includes a new K5.9 (.36) motor with aluminum tuned pipe and a stretched chassis. Several changes have been made to improve on the truck, including stronger diff gears, steel spur gear, uprated driveshafts, thicker chassis, metal geared steering servo, aluminum clutch shoes, 3-speed gearbox as stock, and much more. New wheels and tires and a new body complete the truck, which is RTR and comes with a rechargeable receiver pack and charger. Savage Flux HP In 2009 HPI released the first electric variant of the Savage monster truck, the Savage Flux HP. The Savage Flux HP offers a simple, easy, plug-and-go alternative to the Nitro versions of the Savage. Unlike the nitro-powered Savage, whose engine requires a break-in procedure , the only thing needed to get the Savage Flux HP up and running is a pair of battery packs. The Savage Flux HP is capable of speeds up to 62 mph with the standard brushless motor. Savage Flux