2021 KTM SX 125 Single-Cylinder 124.8

Price:
$7,399.00
  • Year: 2021
  • Make: KTM
  • Model: SX
  • Condition: Used
Description

2021 KTM 125 SX

KICKSTART YOUR RACING CAREER

The KTM 125 SX is the most compact and lightweight of the full-size bikes and delivers a confidence-inspiring ride like no other. A lightweight chassis teams up with the most competitive 125 cc 2-stroke engine in its class, delivering superior agility and power to fulfil the demands of any young adrenaline seeker. This 2-stroke screamer is the ultimate entry point into the pro ranks and a sure-fire way to add to the trophy collection.

Features may include:

ENGINE & EXHAUST

Power progression
  • ENGINE

The KTM 125 SX engine is undoubtedly once again the most competitive and powerful engine in its class. With an outstanding power-to-weight ratio, low cost and overall simplicity, it is clear that 2-strokes will continue to have a successful future at KTM. The compact and durable 37.9 lbs engine was developed using the latest KTM engineering know-how, resulting in broad power across the rev range. Its easy rideability and outstanding performance are benefits that equate to faster lap times and better results.

  • CYLINDER

At the heart of the 125 cc engine is a reworked cylinder with a 54 mm bore. It features an improved power valve unit with a sophisticated mechanism designed for the lateral support exhaust ports. The new exhaust port layout increases engine performance, while the upper contour of the exhaust port has been machined to ensure more accurate port timing. Together with the two-component cylinder head, the newly reworked cylinder is key to the KTM 125 SX's outstanding performance across the entire rev range.

CHASSIS

Control at the core
  • FRAME

The frame and subframe on the KTM 125 SX caters for the aggressive riding styles associated with 125 cc racing. The frame itself is professionally crafted from hydroformed chromium molybdenum steel tubes that are robot welded, ensuring the highest levels of consistent quality. The stiffness has been precisely tailored for the most dynamic handling, and works in perfect harmony with the suspension to provide nimble agility without losing high-speed stability. The frame also features "no dirt" footpegs, which have a simple but effective self-cleaning system that ensures the footpegs return to their original position, providing complete control in all conditions. All SX frames feature the same highly durable powder coating as the KTM Factory machines and come with standard frame protectors. The subframe is made from lightweight aluminum, providing rear fender stability and strong support for the rider at little extra weight

  • SWINGARM

The one-piece swingarm is manufactured using a gravity die-cast production process for exceptional strength at the lowest possible weight. It offers a wide range of adjustment for the rear wheel, allowing for a shorter wheelbase on tighter, twisty tracks, or a longer wheelbase for greater stability on longer, more choppy tracks. The swingarm's chain measurement markings are visible from above, making adjustment simpler and more accurate.

ERGONOMICS & COMFORT

Comfort meets performance
  • SEAT

All KTM SX models feature a seat that perfectly matches the range's dynamic performance-oriented ergonomics. The seat cover features silicone strips that provide better feel and grip for the rider. The seat is conveniently fixed to the bike using one long, lateral screw, making it secure and easy to handle.

Options and Standard Features
Basic Information
  • Year: 2021
  • Make: KTM
  • Model: SX
  • Trim: 125
  • Stock Number: 9255
  • VIN: VBKSXH233MM139255
  • Condition: Used
  • Type: Off-Road
  • Title: Clean
Brakes
  • Brake Brand Name: Brembo
  • Front Brake: Hydraulic Disc
  • Front Brake Diameter (in): 10.2
  • Front Brake Diameter (mm): 260
  • Rear Brake: Hydraulic Disc
  • Rear Brake Diameter (in): 8.7
  • Rear Brake Diameter (mm): 220
Chassis & Suspension
  • Frame: Chromium Molybdenum
  • Front Adjustable Fork Pre-Load
  • Front Adjustable Rebound Damping
  • Front Suspension Brand Name: WP XACT
  • Front Suspension Size (in): 1.9
  • Front Suspension Size (mm): 48
  • Front Suspension Type: Inverted Fork
  • Front Travel (in): 12.2
  • Front Travel (mm): 310
  • Number Rear Shock Absorbers: 1
  • Rear Adjustable Rebound Damping
  • Rear Adjustable Shock / Spring Pre-Load
  • Rear Suspension Brand Name: WP XACT
  • Rear Suspension Material: Aluminum
  • Rear Suspension Type: Twin Sided Swing Arm
  • Rear Travel (in): 11.8
  • Rear Travel (mm): 300
Comfort
  • Adjustable Handlebars
Drivetrain
  • Number Of Speeds: 6
  • Primary Drive (Rear Wheel): Chain
  • Transmission: Manual
  • Transmission Final Drive Ratio: 3.85
  • Transmission Gear Ratio (1): 2.46
  • Transmission Gear Ratio (2): 2
  • Transmission Gear Ratio (3): 1.65
  • Transmission Gear Ratio (4): 1.4
  • Transmission Gear Ratio (5): 1.21
  • Transmission Gear Ratio (6): 1.09
Engine
  • Bore (in): 2.13
  • Bore (mm): 54
  • Carburetor Size (mm): 38
  • Carburetion Brand: Mikuni
  • Carburetion Type: Carburetor
  • Carburetor
  • Cooling System: Liquid
  • Cylinders: 1
  • Engine Disp. to Weight (cc): 0.65
  • Engine Size (cc): 124
  • Engine Size (ci): 7.6
  • Engine Stroke: 2-Stroke
  • Engine Type: Single-Cylinder
  • Fuel Capacity (gal): 2
  • Fuel Requirements: Premium
  • Number Of Carburetors: 1
  • Starter: Kick
  • Stroke (in): 2.15
  • Stroke (mm): 54.5
  • Valve Configuration: Reed Valve
Other Information
  • Chain Guard
  • Decal Kit
  • Exhaust Guard
  • Exterior Covers
  • Exterior Guards
  • Foot Pegs
  • Foot Peg Location: Driver
  • Fork Guards
  • Front Fender
  • Hand Grips
  • Radiator Cover
  • Rear Fender
  • Stand
  • Stand Type: Kick
Specifications
  • Body Material: Plastic
  • Dry Weight (kg): 87.5
  • Dry Weight (lbs): 192
  • Front Tire (Full Spec): Dunlop GEOMAX MX3S 80/100 R21 51M
  • Front Tire (Inches): 21
  • Front Tire Aspect Ratio: 100
  • Front Tire Speed Rating: M
  • Front Tire Width: 80
  • Front Wheel Width (in): 1.6
  • Fuel Capacity (liters): 7
  • Ground Clearance (in): 14.8
  • Ground Clearance (mm): 375
  • Rear Tire (Full Spec): Dunlop GEOMAX MX3S 100/90 R19 57M
  • Rear Tire (Inches): 19
  • Rear Tire Aspect Ratio: 90
  • Rear Tire Speed Rating: M
  • Rear Tire Width: 100
  • Rear Wheel Width (in): 2.15
  • Seat Height (inches): 33
  • Tube / Tubeless: Tubed
  • Wheelbase (in): 58.5
  • Wheelbase (mm): 1485
  • Wheels Composition: Aluminum
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Contact
Longshore Cycle
913 MITCHELL BLVD
Florence Alabama 35630-6146
  • Ask for:Brian Longshore
  • Contact: Contact Us
  • Primary Phone:(256) 764-3038
Terms
We make every effort to present information that is accurate. However, it is based on data provided by the vehicle manufacturer and/or other sources and therefore exact configuration, color, specifications & accessories should be used as a guide only and are not guaranteed. We are not liable for any inaccuracies, claims or losses of any nature. Inventory is subject to prior sale and prices are subject to change without notice and cannot be combined with any other offer(s). The price for listed vehicles as equipped does not include other charges such as: License, Title, Registration Fees, State or Local Taxes, Smog Fees, Credit Investigation, Optional Credit Insurance, Physical Damage of Liability Insurance, Delivery Fees, Finance and/or Documentation Fees. Any and all differences must be addressed prior to the sale of this vehicle.