2015 Yamaha SR Viper

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SR Viper


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The most premium tough trail model in Yamaha's line is the SRViper R-TX LE.

  • High Performance Genesis 4-stroke engine: The over-achieving Genesis® engine is the heart of our lightweight and aggressive SRViper R-TX LE. It pulls consistently hard from takeoff to top end. Your thumb cracks a trio of 41mm throttle bodies that deliver strong performance from idle to wide open.
  • Fuel injection: The Genesis High Performance engine uses Yamaha’s advanced fuel injection system to control fuel flow to the engine. Consumers will enjoy the engine’s spot-on performance and throttle response as a result of the advanced electronic fuel injection system.
  • Engine braking reduction system: The Genesis High Performance engine features the unique Engine Braking Reduction System. The system allows a small amount of air to pass through the fuel injection system when the throttle is released, giving riders a “coast” feeling.
  • Legendary Yamaha Clutching: The SRViper R-TX LE uses the legendary Yamaha YVXC clutching. Easily the most reliable and durable clutch system in the industry, the YVXC has evolved to efficiently handle the unique power characteristics of the Genesis 4-stroke engine.
  • Multi-purpose magnesium chaincase: The SRViper R-TX LE’s chain case and cover serve as both a mounting point for chassis spars and the engine’s oil reservoir. Lightweight magnesium construction minimizes weight.
  • High performance Hayes Brake system: The SRViper R-TX LE’s high performance Hayes brake system delivers stopping power with a large-diameter, 8-inch rotor. Mounted low on the drive shaft, you feel immediate whoa-power with a quick stab of the brake. The hydraulic brake’s race-inspired radial master cylinder design gives you excellent leverage when needed, with precise brake feel and control.
  • Lightweight, rigid SRV chassis: The SRV chassis combines a load-bearing triangulated structure with lightweight aluminum construction to create a neutrally balanced sled that centered on the rider. The pyramidal upper frame creates chassis strength without excessive weight.
  • SRV Front suspension: The SRV front suspension geometry is aimed at managing spindle camber, resulting in minimized bumpsteer and maximized cornering bite and rider confidence in varying trail conditions. The a-arms are mounted at a 30-degree angle from the sled's centerline to efficiently dissipate impact force throughout the entire chassis. Likewise, the front shocks mount directly to the leading spar so that trail forces are routed to the strongest part of the chassis. Wide a-arm spacing minimizes flex and stress in the front suspension system, which means consistent and confident corner handling.
  • Centralized mass design: The SRV chassis layout was engineered with the goal of centralizing mass. Approximately 60 percent of the sled’s weight is tightly centered within the main triangulation. The result is a quick-handling sled that’s fun in a wide variety of conditions.
  • Side exit exhaust: The exhaust exits out the belly on the SRVipers. The unique chassis layout allows the exhaust to exit the back of the engine, have the 3-into-1 manifold cooled by snow kicked up through a hole in the tunnel and then bring the pipe back to the muffler in a traditional configuration. The end result is mass centralization, excellent handling and consistent performance.
  • Adjustable ski stance: The ski rubbers on the SRViper R-TX LE are asymmetrical, with a portion of the part serving as a spacer for the ski. This allows riders to adjust the ski stance on the Viper from 42 to 43 inches, center to center, by simply switching the ski rubbers from left to right, and right to left.
  • Over-the-engine steering: The straight steering post on the SRViper R-TX LE is configured over the engine. It connects to a single bell crank for simplicity and light weight. The design also minimizes freeplay in the steering system and delivers a tight turning radius.
  • NEW! Deep-Keel Tuner ski: The new Deep-Keel Tuner ski greatly contributes to the SRViper’s trail character. The new deep keel design is specifically developed to work with the SRViper models to keep the ski tracking straight and true down the trail, virtually eliminating nosiness and darting. Each keel has its own wearbar, and Yamaha has four different bar configurations to choose from, which means you can tune your sled's cornering bite and steering effort to suit your personal preference
  • Tall, hooked handlebars: To match the SRViper R-TX LE’s tall and forward riding position, a single-piece, dual-hooked handlebar is standard fare on. The hooks have the same grip material as the main bar section, for consistent control, regardless of hand position on the grip.
  • Performance-tuned FOX® FLOAT® 3 EVOL RC front shock package: Not only do the SRViper R-TX LE’s performance-tuned FOX® FLOAT® 3 EVOL RC shocks have compression and rebound damping clickers, but the second EVOL air chamber helps to control bottoming without having to make the shock extra stiff. If aggressive riding is your specialty, this is the front suspension for you.
  • Dual Shock SR 129 Race rear suspension: Built for world class racers, the Dual Shock SR 129 Race rear suspension gives you a competition-grade 13.5-inches of performance-tuned travel. The rear skid is armed with fully coupled floating front pivot arm and an upgraded pair of FOX® ZERO PROS®. Adjustable high and low speed compression damping, rebound and preload, provide optimal customization and the ability to tune from mild to stiff in minutes. The ZERO PROS® are the most premium shocks available on any Yamaha snowmobile. The rear axle features a conjoined rear wheelset. The ingenious design is lighter, more durable and more rigid than most traditional rear axle wheels.
  • Tapered tunnel design: The SRViper R-TX LE’s two-piece, tapered tunnel gives you strength for the long haul and a tapered “fit” for enhanced leg comfort and overall ride positioning.
  • Large fuel tank: The SRViper R-TX LE’s generous 10.6-gallon fuel tank combines with the Genesis engine’s acknowledged fuel efficiency to keep you on the trail longer. The Viper R-TX LE’s efficient design philosophy means that even the fuel tank serves multiple functions. Not only does it carry gas for a long day on the trail, but it also cradles the battery and is the platform for the quick-release trail seat.
  • Tall, sculpted seat: The seat foam on the SR Viper R-TX LE is anatomically designed to comfortably put the rider in an aggressive posture with easy transitions from seated to standing to leaning into a corner.
  • Digital gauge: Full-featured and easy to read, the digital gauge displays critical information in a glance including speed, fuel level, trip mileage, tach and more. We even included a clock so you can watch the time fly.
  • Push button reverse: Convenient handlebar positioning makes getting in reverse easy with just the push of your thumb. A servo motor shifts the drivetrain into reverse simply and consistently.
  • Standard electric start: Yamaha’s electric starter system allows consumers to fire up their SRViper R-TX LE with the turn of a key. There is no pulling on a nylon cord to get this high-tech engine growling! Electric start is a standard feature on all of Yamaha’s 4-stroke machines.
  • Type: 4-stroke / 3-cyl / 1049cc
  • Engine Class: High Performance
  • Cooling: Liquid Cooled
  • Bore & Stroke: 82.0 x 66.2 mm
  • Fuel Delivery: 41mm MIKUNI X 3, Fuel Injection, Liquid Heated
  • Ignition: Digital T.C.I. w/T.P.S.
  • Intake Design: 2 Valves
  • Exhaust Design: 2 Valves, Rear Exhaust
  • Clutch/Transmission: YVXC , Variable Ratio / Electronic Shift Reverse / Magnesium Chaincase & Cover
  • Disc Brake Type: Radial master cylinder hydraulic brake / disc on drive shaft
  • Fuel Capacity: 10 gal. (37.8 L)
  • Front Suspension: SRV
  • Front Shocks: FOX ® FLOAT® 3 EVOL RC
  • Front Travel: 10 in. (254 mm)
  • Rear Suspension: Dual Shock SR 129 Race
  • Rear Shock(s): FOX ® Zero Pro® C53 R13 aluminum HPG
  • Rear Travel: 13.5 in. (343 mm)
  • Overall Height: 46.5 in. (1,180 mm)
  • Overall Length: 118 in. (2,997 mm)
  • Overall Width: 48 in. (1,219 mm)
  • Track / W X L X H: 15 x 129 x 1.25 in (Blue/Orange)
  • Track Type: Rip Saw II (Blue/Orange)
  • Ski Stance (ctr to ctr): 42-43inch (1067-1092 mm) adjustable
  • Electric Start: Standard
  • Reverse: Push Button
  • DC Output: Automotive
  • Heated Seat: Optional
  • Color (s): Yamaha Blue/Orange
  • Warranty: 1 Year (Limited Factory Warranty)



Engine Type
Bore x Stroke
82.0 x 66.2 mm
Engine Cooling
41mm MIKUNI X 3, Fuel Injection, Liquid Heated
Digital T.C.I. w/T.P.S.
2 Valves, Rear Exhaust


Brake Type
Radial master cylinder hydraulic brake / disc on drive shaft
Drive Clutch
YVXC, Variable Ratio


Front Suspension
Suspension: SRV; Shocks: FOX ® FLOAT® 3 EVOL RC
Front Travel
10 in. (254 mm)
Rear Suspension
Suspension: Dual Shock SR 129 Race; Shock(s): FOX ® Zero Pro® C53 R13 aluminum HPG
Rear Travel
13.5 in. (343 mm)
Ski Stance
42-43 in. (1067-1092 mm) adjustable
Track Type
Rip Saw II
Track Dimensions
15 x 129 x 1.25 in.


Fuel Capacity
10 gal. (37.8 L)
Yamaha Blue/Orange
1 Year (Limited Factory Warranty)


Electric Start
Push Button