SX 125 (2015) Parts | MAXISCOOT

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KTM 125 SX

Although KTM has been offering motocross models for much longer, the series did not receive the SX designation until 1993. A name that inevitably recalls the legendary American racing series Supercross, which also uses the abbreviation SX and where an extremely powerful motorcycle is required to win, both in terms of chassis and engine. These characteristics fit perfectly with the brand slogan Ready to Race and have enabled KTM to develop one of the most powerful bikes in its class over the years.

The SX 125 has gone through numerous stages of evolution over time. KTM repeatedly focused on innovation, for example with the introduction of the PDS system, a shock absorber without linkage, introduced in 1998 and discontinued in 2011, with a hydraulic clutch that was considered pioneering in motocross since it was already available before 2000, with an extremely versatile WP air suspension, and finally with the introduction of a fuel injection system for 2-stroke engines.

Technical specifications KTM SX 125 2012 to 2015

Engine:

Type: Liquid-cooled 2-stroke single-cylinder with power valve
Displacement: 124.8 cc
Bore x stroke: 54 x 54.5 mm
Piston: Dual-ring piston
Lubrication: 1:40 mixture (2-stroke oil, JASO FD 100% synthetic standard)
Ignition: DC CDI Kokusan
Intake: Reed valve
Fuel system: Keihin PWK 38S carburetor
- Main jet: 182
- Pilot jet: 42
- Needle: NOZI
Clutch: Multi-disc wet clutch (Brembo hydraulic actuation)
Starter: Kickstarter
Spark plug: NGK BR9 ECMVX
Transmission: 6-speed (Oil 15W50, JASO T903 MA2 standard)
Final drive: 13/50

Maintenance: KTM recommends replacing the piston every 20 hours and changing the gear oil every 10 hours. Check your owner's manual to find all information regarding settings and maintenance.

Useful tip: A table with all carburetor settings depending on conditions such as temperature, altitude, mud, or sand can be found in the owner's manual. This manual is available on the KTM website. It is very important to follow these guidelines to maintain the reliability and performance of your 125.

Chassis:

Frame: Chrome-molybdenum steel tube frame with aluminum subframe
Fork / travel: WP MXMA (Ø 48 mm with steel springs) / 330 mm, recommended oil: SAE 5
Shock absorber / travel: WP DCC with linkage / 300 mm, recommended oil: SAE 2.5
Front brake: 260 mm disc
Rear brake: 220 mm disc
Dry weight: 91.6 kg
Seat height: 992 mm
Front tire: 80/100-21
Rear tire: 100/90-19
Tank capacity: 7.5 l (Super Plus 98 recommended)

Maintenance: KTM recommends an oil change for the fork and shock absorber every 40 operating hours. Check your owner's manual to find all information regarding settings and maintenance.

KTM SX 125 in our online shop

In our online shop, we aim to offer quality parts with short delivery times and at the best price. For your 125 SX, you will find chain kits, fork seals, and oil for regular maintenance, as well as parts for customization such as plastic kits, handlebars, grips, levers, and more.

for SX 125 (2015)

Cylinder Heads and Pistons(6)

for SX 125 (2015)

Camshafts and Valves(2)

for SX 125 (2015)

Cylinder Gaskets(2)

for SX 125 (2015)

Cylinder Accessories(3)

for SX 125 (2015)

for SX 125 (2015)

for SX 125 (2015)

Bearings and Oil Seals(5)

for SX 125 (2015)

Small End Bearings(7)

for SX 125 (2015)

Crankshaft Accessories(1)

for SX 125 (2015)

for SX 125 (2015)

Exhausts Tuning(8)

for SX 125 (2015)

Exhaust Accessories(101)

for SX 125 (2015)

Carburetor and Intake

for SX 125 (2015)

Carburetors(42)

for SX 125 (2015)

Intake Manifolds(9)

for SX 125 (2015)

Reed Valves and Petals(7)

for SX 125 (2015)

Carburetor Accessories(119)

for SX 125 (2015)

for SX 125 (2015)

Fuel System(85)

for SX 125 (2015)

for SX 125 (2015)

for SX 125 (2015)

for SX 125 (2015)

Clutch Bells(1)

for SX 125 (2015)

Clutch Springs(1)

for SX 125 (2015)

Clutch Accessories(3)

for SX 125 (2015)

for SX 125 (2015)

Chains and Sprockets(110)

for SX 125 (2015)

Transmission Accessories(28)

for SX 125 (2015)

for SX 125 (2015)

for SX 125 (2015)

Clutch Cases(1)

for SX 125 (2015)

for SX 125 (2015)

Spark Plugs(221)

for SX 125 (2015)

Ignition Coils(2)

for SX 125 (2015)

Ignition Accessories(3)

for SX 125 (2015)

Killswitches(7)

for SX 125 (2015)

for SX 125 (2015)

Dashboard Instruments(16)

for SX 125 (2015)

for SX 125 (2015)

Switches and Cables(33)

for SX 125 (2015)

Electrical Accessories(24)

for SX 125 (2015)

Instrument Accessories(15)

for SX 125 (2015)

for SX 125 (2015)

for SX 125 (2015)

for SX 125 (2015)

for SX 125 (2015)

for SX 125 (2015)

Lighting Accessories(9)

for SX 125 (2015)

for SX 125 (2015)

for SX 125 (2015)

Side and Main Stands(5)

for SX 125 (2015)

Handlebars(217)

for SX 125 (2015)

Throttle Grips(34)

for SX 125 (2015)

for SX 125 (2015)

Clutch and Brake Levers(69)

for SX 125 (2015)

Handlebar Ends(12)

for SX 125 (2015)

Handlebar Clamps(16)

for SX 125 (2015)

for SX 125 (2015)

for SX 125 (2015)

Kickstart Levers(3)

for SX 125 (2015)

Screws and Caps(53)

for SX 125 (2015)

Seats and Seat Covers(4)

for SX 125 (2015)

Gearshift and Brake Pedals(25)

for SX 125 (2015)

for SX 125 (2015)

Other Customizing Parts(3)

for SX 125 (2015)

for SX 125 (2015)

for SX 125 (2015)

Cooling System(27)

for SX 125 (2015)

for SX 125 (2015)

for SX 125 (2015)

Bearings and Oil Seals(46)

for SX 125 (2015)

Nuts and Bolts(181)

for SX 125 (2015)

for SX 125 (2015)

Other Spare Parts(2)

for SX 125 (2015)

Starter Motors(1)

for SX 125 (2015)

for SX 125 (2015)

Brake Pads and Shoes(14)

for SX 125 (2015)

Brake Calipers(11)

for SX 125 (2015)

for SX 125 (2015)

Brake Cylinders(16)

for SX 125 (2015)

Brake Lines and Cables(10)

for SX 125 (2015)

Brake Accessories(33)

for SX 125 (2015)

for SX 125 (2015)

Shock Absorbers(4)

for SX 125 (2015)

for SX 125 (2015)

Steering Head Bearings(1)

for SX 125 (2015)

Other Chassis Parts(23)

for SX 125 (2015)

for SX 125 (2015)

for SX 125 (2015)

for SX 125 (2015)

Wheel Accessories(62)

for SX 125 (2015)

Vehicle Equipment

for SX 125 (2015)

Bike and Leg Covers(2)

for SX 125 (2015)

for SX 125 (2015)

for SX 125 (2015)

Locks & Security(34)

for SX 125 (2015)

Motorcycle Helmets(17)

for SX 125 (2015)

Motocross Goggles(51)

for SX 125 (2015)

Motorcycle Gloves(48)

for SX 125 (2015)

Motorcycle Bags & Backpacks(3)

for SX 125 (2015)

Accessories(49)

for SX 125 (2015)

Motorcycle Gear(21)

for SX 125 (2015)

Motorcycle Jackets(5)Motorcycle Suits(2)Winter & Rain Gear(12)Motorcycle Intercoms & GPS(2)

Motocross Gear(15)

for SX 125 (2015)

Motocross Jerseys(1)Motocross Boots(2)Motocross Protectors(12)

for SX 125 (2015)

Caps - Beanies(16)

for SX 125 (2015)

for SX 125 (2015)

Sweaters - Hoodies - Sweatshirts(6)

for SX 125 (2015)

Coats - Jackets(1)

for SX 125 (2015)

Jeans - Pants(1)

for SX 125 (2015)

Sweatpants - Cargo(1)

for SX 125 (2015)

for SX 125 (2015)

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