2018 Ski-Doo MXZ X-RS 850 E-TEC w/ Adj. Pkg. Ripsaw 1.25


You don’t have to be a racer to appreciate the incredible big bump capability and cornering precision of the Ski-Doo MXZ X-RS 850 E-TEC model. It's the perfect sled for an intense Sunday run over rutted out trails.


  • RMOTION 129 REAR SUSPENSION: The standard for control, capability, comfort and adjustability – with added traction, better braking and more bump filtration in 129-inch (327 cm) version. Separate spring and shock dynamics, plus the most rising-rate/progressive motion ratio in the industry give the rMotion suspension its supple ride in small bumps with added capability in large ones. Easy adjustments for shocks, springs and coupling block.
  • ROTAX 800R E-TEC ENGINE: Direct-injection technology mill pumps out big power while delivering up to 19 mpg (12.3 L/100 km) fuel economy. Excellent oil consumption, plus easy throttle pull, linear power delivery and virtually no smoke or smell. Proven and recognized by riders for reliability.* Preparing for the off-season is easy with built-in automatic summerization function.
  • REV-XS RS PLATFORM: REV-X base architecture and design sets the standard for light weight, durability and handling, especially with the same chassis modifications as the MXZx 600RS race sled – including wide, strong running boards with extruded edge. Driver can stretch their legs due to forward foot position. Layered flowing edge REV-XS body style is aggressive and sophisticated with excellent wind protection. The steering post can be moved forward to create a very aggressive position for stand-up riding.
  • RAS 2 FRONT SUSPENSION: Ultimate geometry and lighter components deliver excellent precision and stability – especially in extreme bumps – and reduces roll in corners. Sharp styling, too.
  • KYB PRO 40 REAR SHOCKS: These shocks are standard on the MXZx 600RS race sled. Extreme capability, extreme durability shocks for control in the toughest conditions. Easy Adjust compression damping knob does not require tools. Rebuildable/revalvable design.
  • MULTI-FUNCTION ANALOG / DIGITAL GAUGE: Sharply-styled analog speedometer and tachometer are complemented by a multi-function three-zone LCD screen packed with data.
  • RMOTION QUICK ADJUST SYSTEM (OPTIONAL) (SPRING ONLY): Running-board-mounted controls for rear suspension spring pre-load and rear shock compression damping make fine-tuning fast and easy, even with gloves on. Increases spring preload adjustment range by 40%, with infinite settings. (Available as part of optional Adjustment Package)
  • PILOT TS ADJUSTABLE SKIS (OPTIONAL) (SPRING ONLY): The industry's first adjustable ski. Dial-in ski bite for any snow conditions or your riding style by turning a knob on the ski leg, which raises or lowers the ski runner over a range of .5 in. (12.5 mm). This blade runner and new square keel design work together to make darting a thing of the past. (Available as part of optional Adjustment Package)
  • ADJUSTMENT PACKAGE (OPTIONAL) (SPRING ONLY): This option includes rMotion Quick Adjust system with no-tool tuning of the rear spring preload and shock compression damping on the running boards and new Pilot TS adjustable skis. Available as a Spring Order option on select models*.

General Information

Manufacturer Ski-Doo
Model Year 2018
Model MXZ X-RS 850 E-TEC w/ Adj. Pkg. Ripsaw 1.25
Model Code MXJF
Color Black


Length Overall - 118.5 in. (3,010 mm)
Height Overall - 47.2 in. (1,200 mm)
Width Overall - 47.9 in. (1,217 mm)
Weight Dry - 493 lb. (224 kg)

Engine & Drivetrain


Front - KYB Pro 36R Easy-Adjust

Center - KYB Pro 40 Easy-Adjust

Rear - KYB Pro 40 Easy-Adjust

Front Suspension RAS 3
Rear Suspension rMotion
Engine Rotax E-TEC® 800R, liquid-cooled, 3-D R.A.V.E., 2-cylinders
Horsepower 165 hp @ 7,900 rpm
Displacement 849 cc (51.9 ci)
Bore x Stroke

3.2 x 82 mm

3.2 in. x 80.4 mm

Carburetion Electronic direct injection
Fuel Capacity 10.6 gal. (40 l)
Oil Capacity 3.6 qt. (3.4 l)

Drive - pDrive

Driven - QRS

Brakes Brembo racing brake with stainless-steel braided brake line
Powertrain Engagement - 3,600 rpm
Fuel Type

Premium unleaded

Minimum octane - 91

Fuel System Electronic Direct Injection with additional booster injectors


Ski Length 42 in. (1,066 mm)
Skis Pilot™ 5.7
Ski Stance 42.4 in. (1,077 mm)
Track LxWxH 129 x 15 x 1.25 in. (3,269 x 381 x 31.8 mm) RipSaw or Ice Ripper XT


Additional Colors


Hyper Silver / Sunburst Yellow