ID # 19441154

2022 Yamaha YZ125X

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Overview

Light, fast and fun! The high performance two-stroke entry into the world of XC and enduro competition. Designed to be the perfect stepping stone toward a full size cross-country machine, the YZ125X is the pinnacle of lightweight, two-stroke performance on the race course.

Specifications
Model
YZ
Year
2022
Sale Type
New
Manufacturer
Yamaha
Color
Team Yamaha Blue
WIDTH
825 mm (32.5")
ENGINE
2-stroke, liquid-cooled, reed-valve, single
HEIGHT
1,285 mm (50.6")
LENGTH
2,140 mm (84.3")
WET WEIGHT
94 kg (209 lb)
LUBRICATION
Wet sump
SEAT HEIGHT
955 mm (37.6")
DISPLACEMENT
125 cc
TIRES (REAR)
110/90-18
TRANSMISSION
Constant mesh, 6-speed
BRAKES (REAR)
245 mm disc / single piston caliper
FUEL CAPACITY
8 litres (1.8 imp. gallons)
TIRES (FRONT)
90/90-21
BRAKES (FRONT)
270 mm floating disc / twin piston caliper
BORE AND STROKE
54.0 x 54.5 mm
GROUND CLEARANCE
351 mm (13.8")
COMPRESSION RATIO
7.4~8.8:1
SUSPENSION (REAR)
Fully adjustable KYB link Monocross / 315 mm (12.4") travel
SUSPENSION (FRONT)
Fully adjustable 48 mm KYB inverted fork / 300 mm (11.8") travel
key features
  • YZ125 two-stroke engine with Yamaha Power Valve System (YPVS) 
  • Model-specific CDI unit 
  • Racing intake system 
  • Ultra-lightweight YZ125-spec frame 
  • Industry-leading, XC-specific adjustable KYB suspension 
  • Smooth shifting, 6-speed, close ratio transmission
highlights

CROSS COUNTRY- TUNED YZ125 POWER 2022 Yamaha YZ125X

Based on the legendary 125cc liquid-cooled, reed-valve-inducted YZ two-stroke engine, the YZ125X utilizes a revised compression ratio, Yamaha Power Valve System (YPVS™) timing and a model-specific CDI unit—all focused on creating broad power delivery that suits off-road terrain and a wide range of rider skill levels.

CROSS COUNTRY- SPECIFIC FEATURES 2022 Yamaha YZ125X

Cross country focused suspension setup and Dunlop® Geomax AT81 tires, 18-inch rear wheel, sealed O-ring chain, a standard side stand and fuel tank petcock with reserve position are perfect for GNCC® racing.

TWO STROKE AGILITY 2022 Yamaha YZ125X

The YZ125X is optimized for the unique demands of Hare Scrambles and GNCC® racing. The YPVS™-equipped 125cc two-stroke engine is mated to a six-speed transmission for the ultimate cross country powerplant.

features and benefits

KEY FEATURES

  • YZ125 two-stroke engine with Yamaha Power Valve System (YPVS)
  • Model-specific CDI unit
  • Racing intake system
  • Ultra-lightweight YZ125-spec frame
  • Industry-leading, XC-specific adjustable KYB suspension
  • Smooth shifting, 6-speed, close ratio transmission
  • "Gripper" type seat and narrow fuel tank
  • Adjustable, tapered aluminum handlebar
  • 18-inch rear wheel and large rear sprocket

ENGINE

  • Liquid-cooled, 125 cc, crankcase reed valve-inducted 2-stroke engine provides class leading power and acceleration.
    • super crisp, instant "right now" engine power (when in the powerband)
    • easy and economical to maintain, service and rebuild
  • 7.5-degree cylinder angle and straight shot intake path through the combustion chamber.
    • maximum power output
  • Ceramic composite cylinder bore is a linerless design with the ceramic coating sprayed directly on the aluminum block.
    • reduced weight (no heavy iron liner)
    • reduced friction
    • extended cylinder life
    • excellent heat dissipation for consistent power delivery
  • Specially designed combustion chamber achieves a more complete burn at higher rpm.
    • class-leading power
  • Lightweight, flat-top forged aluminum piston.
    • excellent durability
    • light weight means fast engine response
    • matches combustion chamber design for maximum power delivery
  • Lightweight, ball-bearing-style crank.
    • lightweight design for fast throttle response
    • friction-reducing crank seals
  • Compact crankcases.
    • lightweight design
    • helps centralize mass
  • Quick-access, magnesium outer (sub) clutch cover.
    • lightweight design
    • speeds clutch access
  • Close-ratio, 6-speed transmission uses optimized gear ratios.
    • ratios are matched to engine output for maximum performance
    • optimal hook-up for outstanding acceleration and corner-exiting power
    • transmission features "involute splines" for smooth, positive shifting even under power
  • Yamaha's patented YPVS system.
    • features a slide (guillotine) type power valve that provides the benefits of both solid, low-rpm power delivery combined with a strong top-end punch. This system varies the exhaust port height and timing based on engine rpm.
  • Mikuni TMXx38 carburetor features a "D" slide design.
    • enhances overall power delivery
    • provides crisp throttle response at all rpm
  • 6-petal, carbon fibre reed design.
    • for stronger high-rpm performance with greater over-rev capacity
  • CD (capacitor discharge) ignition system.
    • delivers a precise spark for fast, sure starts
    • ensures optimal timing at all rpm for fast, strong response
  • High-capacity, washable, dual-stage, foam air filter.
    • excellent filtering qualities
    • reusable filter reduces maintenance costs
  • Large-capacity, dual radiators feature 10-row cores.
    • maximum cooling efficiency
  • Lightweight exhaust system features a re-packable aluminum silencer which allows the rider/tuner to maintain the correct amount of back pressure for maximum engine performance while reducing noise.
  • Works-style clutch lever and race-spec barrel adjuster.
    • easy lever pull
    • for on-the-fly clutch adjustments

CHASSIS/SUSPENSION

  • Lightweight, aluminum, semi-double-cradle frame.
    • combines with compact engine to provide an awesome power to weight ratio
    • obvious benefit of an aluminum frame is a significant weight reduction
    • Yamaha maintains semi-double cradle design because it offers an excellent rigidity balance between lateral and torsional rigidity while offering controlled flex in the longitudinal plane
    • result is a light aluminum frame, which provides excellent handling, good ride quality, excellent stability and responsive cornering performance
  • Removable rear subframe.
    • constructed of square-section, lightweight aluminum
    • detachable design allows easy access when servicing rear suspension components
  • Lightweight, tapered design aluminum swingarm.
    • produced by "hydro forming", a forming method that uses high pressure water to form shapes
    • excellent rear wheel traction and control
    • lightweight design
  • Cast aluminum upper and forged lower triple clamps.
    • strong yet lightweight
    • fast, agile handling
  • Adjustable handlebar mounts.
    • handlebar can be moved 10 mm rearward if desired
  • "Speed Sensitive System" 48 mm, adjustable, inverted, "twin chamber" KYB fork. Front wheel travel is 300 mm (11.8").
    • fork adjustments include: 20-way compression damping and 20-way rebound damping
    • optional fork springs are available through Genuine Yamaha parts
    • low-friction fork seals provide reduced stiction for a smoother stroke
    • twin-chamber design means the damper unit is in a separate structure which prevents aerated fork oil from entering the inner damper assembly and degrading its damping abilities
    • the inner damper is pressurized, it also eliminates bubbles forming in the oil
    • "Speed Sensitive" design means the damping force is controlled by piston speed, not position in the fork
  • Fork also features a Transfer Control Valve (TCV).
    • TCV enhances damping from mid to full stroke and improves bottoming characteristics
    • TCV offers more precise control throughout the full suspension stroke
    • TCV is located on the upside of the spring and its function is controlled by piston speed, not piston position, hence the term "Speed Sensitive System fork"
  • Large wrap-around plastic fork protectors.
    • provide excellent protection from dirt, mud and stone chips
    • self-supporting design reduces friction for smoother stroke
  • Monocross link rear suspension features a fully adjustable, KYB piggyback shock which provides 315 mm (12.4") of wheel travel.
    • features separate adjusters for high- and low-speed compression damping
    • adjustments include: spring preload, 20-way rebound damping, 20-way low-speed compression damping and 2 turns of high speed compression damping
    • 18 mm damper rod
    • Kashima coating (friction reducer) is used in the shock body and sub tank to reduce friction and improve suspension performance
    • piggyback shock utilizes a full rebound oil lock system for excellent suspension function and great ride quality.
  • 270 mm floating front disc brake with Nissin twin piston caliper.
    • "wave" style rotor (disc) reduces weight, improves cooling (more surface area) and improves styling
    • braking performance is excellent with great feel and control
  • "Shorty" front brake lever is adjustable for various hand sizes.
  • 245 mm rear disc brake with single piston caliper.
    • integrated master cylinder (fluid reservoir is integrated into the top of the master cylinder)
    • "wave" style rotor (disc) reduces weight, improves cooling (more surface area) and improves styling
    • strong stopping power with excellent feel and control
  • Rugged, plastic rear caliper and lower rear disc protectors / guards.
  • Sun Star-brand rear sprocket.
    • increases the contact area between the sprocket and chain rollers
    • reduces the load on the chain and increases service life of chain and sprocket
  • Lightweight, D.I.D. 21" front and 18" rear rims and premium Dunlop tires.
    • provide excellent durability
    • reduces unsprung weight for optimal suspension performance and handling
  • Flat-design seat features multi-density foam.
    • provides good initial softness/comfort and then increases the firmness as more pressure is applied
    • "pebble" finish on the top and side surfaces provides excellent rider grip and durability
  • Seat, handlebar and fuel tank ergonomics provide excellent freedom of movement for the rider.

DETAILS

  • Slim design, modern aggressive bodywork allows easy rider movements
  • Lightweight YZ250F/450F-based wide footpegs provide excellent grip & ground clearance
  • Heavy-duty 520 gold anodized "O" ring chain
  • Rugged chain guide helps prevent the chain from de-railing & also helps protect the rear sprocket
  • Serrated rear brake lever & folding shift lever tip
  • Stainless steel, inner clutch cable provides excellent strength, smooth action & long life
  • E10 friendly fuel system components
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