This is the 1/10 scale T-Maxx 4-Wheel Drive, Ready-To-Run, Monster Truck with Auto-Shifting Two-Speed Forward and Two-Speed Reverse Transmission, Traxxas TQ-3 3-Channel Radio System & TRX 2.5 Racing Engine w/EZ Start. The T-Maxx now includes the following upgrades; New Stronger Front Bulkheads Molded in Gray New Strengthened Diff Housings New Receiver Box With Blue Anodized Aluminum Crimp Nut New Shock Towers with Stronger Revo-Style Body Mounting Posts New Thicker .12 (3.2mm) 6061-T6 Aluminum Chassis Eliminates Some Cut-Outs for a Cleaner Look Battery Box Skid Plates Shock Bodies and Lower Chassis Braces Molded in Grey Fully Painted and Decaled Body The OLD version of the T-Maxx had the Pro .15 engine and the NEW version has the more powerful 2.5 engine and was released early September 2002. When ordering replacement or hop-up parts check the INDIVIDUAL PARTS DESCRIPTION of EACH item to see which T-Maxx version that part fits. List of NEW Features: *Now comes with the TRX 2.5 racing engine w/EZ-Start System delivers 60% MORE power without adding more weight! *WideMaxx Suspension for superior stability over an 1 wider. Plus a new selection of shock mounting positions on the suspension arms. *Updated 3mm thick Blue anodized T6 chassis which is 50% more rigid. *New turnbuckles are 3.5mm diameter and designed with stops so you get perfect alignment settings. *Larger diameter stronger drive shafts, heavy duty yokes and larger U-joint balls. FEATURES: Fully enclosed forward/reverse 2-speed transmission with low 1st gear 3-channel radio system (3rd channel controls fwd/rev shifting) Shaft driven 4WD system EZ-Start electric starting system with battery and charger All new drive shafts and universals are stronger, larger diameter and heavy duty Powerful disk brake Giant 5.75 diameter x 3.5 width tires mounted on 3.2 metal-finish 5-spoke wheels A new 3mm blue-anodized 6061-T6 aluminum chassis. Eight pre-filled oil-filled coil-over Ultra Shocks Super heavy-duty hardened steel differential gears 6mm hardened steel stub axles Full ball bearings 125cc fuel tank Ultra-long suspension arms Fully-independent adjustable suspension with 3.5 of wheel travel Heavy-duty front and rear skid plates and bumpers Tubular aluminum exhaust header with plastic tuned pipe Dirt resistant battery and receiver boxes with plastic tuned pipe INCLUDES: One T-MAXX RTR truck with pre-installed 3-channel radio and a TRX 2.5 racing engine (short shaft), extra glow plug, fuel bottle EZ Start electric engine starter with battery and 110V charger, tools New graphics on the bodies with no cutting or trimming! _ REQUIRES: 12 AA Batteries for radio Fuel (10%-20% nitro content) Application of the decals CA glue to attach tires to the rims SPECS: Length: 19.125" (486mm) Front Track: 16.25" (414mm) Rear Track: 16.25" (414mm) Height: 10.375" (264mm) Center Ground Clearance: 4" (101mm) Wheelbase: 12" (305mm) Tires (Front and Rear): 5.75" x 3.5" (146 x 89mm) Wheels (Front and Rear): 3.2" (81mm) Engine: TRX 2.5(R) Racing Engine with Easy Starter Transmission: Auto-Shifting 2-Speed Forward/2-Speed Reverse Differential: Hardened steel bevel gear Drive System: Shaft driven 4WD Chassis Type: 3mm 6061-T6 aluminum Approximate Speed: 20mph 1st Gear, 40+mph 2nd Gear (per Traxxas) Nitro with Reverse: Unprecedented innovation with the first Off-Road Vehicle with a fully-enclosed two-speed transmission with two speeds forward and two- speeds reverse. This patented design is the first and only to allow full proportional control of your Throttle and Braking in Both Forward and Reverse. The Third radio channel controls the forward/reverse shifting. A mechanical lockout prevents accidental high-speed direction changes. The channel number will indicate color of body TRAC54A2 ...RED TRAC54A5 ...WHITE TRAC54A4 ...BLACK TRAC54A6 ...BLUE JAL 9/22/99 ir/jl updated 8-13-02kh updt 3/17/03 updt jxs 12/17/09