Motorcyclist

2006 KTM SX Review

March 19, 2013

Intro

Austrian manufacturer KTM Sportmotorcycle AG introduces its off-road models in 2006. Off-road, trail, or dirt bikes are speedy and lightweight, with rugged tires designed for motocross, cross-country, and all-terrain competition.

The 2006 KTM SX off-road models’ closest competition includes Yamaha (the overall user-rated leader), Honda, and Suzuki. Of all the adult SX submodels, which include the SX 525, SX 450, SX 250 F, SX 250, and SX 125, the 2006 KTM SX 125 ranks the highest in consumer ratings.

The SX Youth comes in five submodels: the SX 50, SX 50 Junior, SX 65, SX 85 17/14, and SX 85 19/16. Of these submodels, the SX 85 17/14 ranks the highest in consumer ratings.

The 2006 KTM XC series is built on a chromium molybdenum frame and has plastic body construction. Instrumentation, bags, and storage are not standard equipment on the series due to the nature and intent of the motorcycle.

New For 2006

2006 was an introduction and major revision year for the SX 105 and 250 F models.

2006 KTM SX Specs

Models: Off-Road Models: SX 105, SX 125, SX 250, SX 250 F, SX 450, SX 525; Youth Models: SX 50, SX 50 Junior, SX 65, SX 85 (17/14), SX 85 (19/16)
Engine Type: 2-Stroke, Single-Cylinder, Liquid cooled (SX 105, SX 125, SX 250, SX 50, SX 50; Junior, SX 65, SX 85 (17/14), SX 85 (19/16); 4-Stroke, Single-Cylinder, Liquid-cooled (SX 250 F, SX 450, SX 525)
Bore and Stroke: SX 105: 2.05 in. (52 mm) x 1.9 in. (49 mm); SX 125: 2.13 in. (54 mm) x 2.15 in. (54.5 mm); SX 250: 2.62 in. (66.4 mm) x 2.84 in. (72 mm); SX 250 F: 3 in. (76 mm) x 2.2 in. (55 mm); SX 450: 3.74 in. (95 mm) x 2.5 in. (63.4 mm); SX 525: 3.74 in. (95 mm) x 2.84 in. (72 mm); SX 50: 1.55 in. (39.5 mm) x 1.58 in. (40 mm); SX 50 Junior: 1.55 in. (39.5 mm) x 1.58 in. (40 mm); SX 65: 1.77 in. (45 mm) x 1.61 in. (40.8 mm); SX 85 (17/14): 1.93 in. (49 mm) x 1.85 in. (47 mm); SX 85 (19/16): 1.93 in. (49 mm) x 1.85 in. (47 mm)
Compression ratio: N/A
Valve Train: Reed valve (SX 105, SX 125, SX 250, SX 50, SX 50 Junior, SX 65, SX 85 (17/14); SX 85 (19/16)); DOHC, 4 valves, 4 cylinders (SX 250 F); SOHC, 4 valves, 4 cylinders (SX 450 and SX 525)
Fuel System: Regular, Keihin Carburetor (SX 105, SX 125, SX 250, SX 250 F, SX 450, SX 525, SX 85 (17/14), SX 85 (19/16)); Regular, Dell'Orto Carburetor (SX 50 and SX 50 Junior); Regular, Mikuni, Carburetor (SX 65)
Ignition: Kick Start
Transmission: 1-speed manual (SX 50); 1-speed automatic (SX 50 Junior); 4-speed manual (SX 450 and SX 525); 5-speed manual (SX 250); 6-speed manual (SX 105, SX 125, SX 250 F, SX 65, SX 85 (17/14), SX 85 (19/16))
Primary Drive (Rear Wheel): Chain
Fuel Capacity: 0.5 gal. (1.8 l.) (SX 50 and SX 50 Junior); 0.9 gal. (3.3 l.) (SX 65) 1.3 gal. (5 l.) (SX 105, SX 85 (17/14), SX 85 (19/16)); 1.9 gal. (7.2 l.) (SX 250 F, SX 450, SX 525); 2 gal. (7.5 l.) (SX 125 and SX 250)
Estimated Fuel Economy: Data not available
Brakes (Front): 6.3 in. (160 mm); Disc (SX 50 and SX 50 Junior); 7.8 in. (200 mm); Disc (SX 65); 8.7 in. (220 mm); Disc (SX 105, SX 85 (17/14), SX 85 (19/16)); Brembo, 10.2 in. (260 mm); Disc (SX 125, SX 250, SX 250 F, SX 450, SX 525)
Brakes (Rear): 3.5 in. (90 mm); Drum (SX 50 Junior); 5.5 in. (140 mm); Disc (SX 50); 6.3 in. (160 mm); Disc (SX 65); 7.9 in. (200 mm); Disc (SX 105, SX 85 (17/14), SX 85 (19/16)); Brembo, 8.7 in. (220 mm); Disc (SX 125, SX 250, SX 250 F, SX 450, SX 535)
Suspension (Front): Marzocchi; Inverted Fork; 1.4 in. (35 mm) Front Fork diam.; 8.7 in. (220 mm) Front Travel (SX 65); Marzocchi; Telescopic Fork; 1.3 in. (32 mm) Front Fork diam.; 7.3 in. (185 mm) Front Travel (SX 50); Marzocchi; Telescopic Fork; 1.3 in. (32 mm) Front Fork diam.; 5.5 in. (140 mm) Front Travel (SX 50 Junior); WP; Inverted Fork; 1.9 in. (48 mm) Front Fork diam.; 11.8 in. (300 mm) Front Travel (SX 125, SX 250, SX 250 F, SX 450, SX 525); WP; Inverted Fork; 1.7 in. (43 mm) Front Fork diam.; 10.8 in. (275 mm) Front Travel (SX 105, SX 85 (17/14) and SX 85 (19/16)
Suspension (Rear): Marzocchi; 1 Rear Shock Absorber – Adjustable, Rebound Damping; Aluminum Twin-Sided Swing Arm; 10.6 in. (269.2 mm) Rear Travel (SX 65); Marzocchi; 1 Rear Shock Absorber – Adjustable, Rebound Damping; Aluminum Twin-Sided Swing Arm; 7.3 in. (185.4 mm) Rear Travel (SX 50); Marzocchi; 1 Rear Shock Absorber – Adjustable, Rebound Damping; Aluminum Twin-Sided Swing Arm; 8.1 in. (205.7 mm) Rear Travel (SX 50 Junior); WP; 1 Rear Shock Absorber – Adjustable, Rebound Damping; Aluminum Twin-Sided Swing Arm; 13.2 in. (335 mm) Rear Travel (SX 125, SX 250, SX 250 F, SX 450, SX 525); WP; 1 Rear Shock Absorber – Adjustable, Rebound Damping; Aluminum Twin-Sided Swing Arm; 11.8 in. (299.7 mm) Rear Travel (SX 105, SX 85 (17/14) and SX 85 (19/16)
Wheelbase: 35.8-inch (910 mm) (SX 50 Junior); 44.8-inch (1137 mm) (SX 65); 40.6-inch (1030 mm) (SX 50); 50.8-inch (1290.3 mm) (SX 105, SX 85 (17/14), SX 85 (19/16)); 57.9-inch (1471 (SX 125); 58.1-inch (1475 mm) (SX 250); 58.3-inch (1481 mm) (SX 250 F, SX 450, SX 525)
Seat Height: Adjustable, Vinyl, Driver; 23 in. (585 mm) (SX 50 Junior); Adjustable, Vinyl, Driver; 25.6 in. (650 mm) (SX 50); Adjustable, Vinyl, Driver; 29.5 in. (750 mm) (SX 65); Adjustable, Vinyl, Driver; 35.4 in. (900 mm) (SX 105, SX 85 (17/14), SX 85 (19/16)); Adjustable, Vinyl, Driver; 36.4 in. (925 mm) (SX 125, SX 250, XS 250 F, SX 450, SX 525)
Dry Weight: 85.5 lbs. (38.8 kg) (SX 50); 82.9 lbs. (37.6 kg) (SX 50 Junior) ; 122.6 lbs. (55.6 kg) (SX 65) ; 149.9 lbs. (68 kg) (SX 105, SX 85 (17/14), SX 85 (19/16)) ; 203 lbs. (92.1 kg) (SX 125) ; 208 lbs. (94.3 kg) (SX 250) ; 216 lbs. (98 kg) (SX 250 F); 231 lbs. (104.8 kg) (SX 450) ; 233.7 lbs. (106 kg) (SX 525)
Tires (Front): Tubed; 2.50 x 12; 12-in. Wheel Dia.; 1.6-in. Wheel Width (SX 50, SX 50 Junior); Tubed; Bridgestone: 60/100 R14; Tire aspect ratio: 100; Width = 60; 14-in. Dia.; 1.6-in. Wheel Width (SX 65); Tubed; Bridgestone: 70/100 R17; Tire aspect ratio: 100; Width = 70; 17-in. Dia.; 1.4-in. Wheel Width (SX 85 (17/14)); Tubed; Bridgestone: 70/100 R19; Tire aspect ratio: 100; Width = 70; 19-in. Dia.; 1.6-in. Wheel Width (SX 105, (SX 85 (19/16)); Tubed; Bridgestone: 80/100 R21; Tire aspect ratio: 100; Width = 80; 21-in. Dia.; 1.6-in. Wheel Width (SX 125, SX 250, SX 250 F, SX 450, SX 525)
Tires (Rear): Tubed; 2.75 x 10; 10-in. Wheel Dia.; 1.6-in. wheel Width (SX 50, SX 50 Junior); Tubed; Bridgestone: 80/100 R12; Tire aspect ratio: 100; Width = 80; 12-in. Dia.; 1.85-in. Wheel Width (SX 65); Tubed; Bridgestone: 90/100 R14; Tire aspect ratio: 100; Width = 90; 14-in. Dia.; 1.4-in. Wheel Width (SX 85 (17/14)); Tubed; Bridgestone: 90/100 R16; Tire aspect ratio: 100; Width = 90; 19-in. Dia.; 1.85-in. Wheel Width (SX 105, (SX 85 (19/16)); Tubed; Bridgestone: 100/90 R19; Tire aspect ratio: 90; Width = 100; 19-in. Dia.; 2.15-in. Wheel Width (SX 125); Tubed; Bridgestone: 110/90 R19; Tire aspect ratio: 90; Width = 110; 19-in. Dia.; 2.15-in. Wheel Width (SX 250, SX 250 F, SX 450, SX 525)

Accessories

13 Liter Fuel Tank
13 Liter Fuel Tank Seat
4-Stroke Case Guard
Adjustable Footpeg Set
Black Enduro Handguards
Black Handguard Deflectors
Black MX Handguards
Dirt Star Front Wheel with Black Rim 21 x 1.60
Electric Starter Kit
Excel Front Wheel with Black Rim 21 x 1.6
Excel Rear Wheel with Black Rim 19 x 2.15
F3 Extra Wide Foot Pegs
Fan Cooling
Front Fork Guard Set
Grip Heaters
High Seat
Hour meter
Low Profile Handguards
Low Seat
Orange Enduro Handguards
Orange Handguard Deflectors
Orange MX Handguards
Poly Resin Bike Stand
ProBend Aluminum Handguards 28mm
Protective Cover
Six Days Seat
Soft Off-road Seat By SDG
Soft Tail Off-road Seat By SDG
Spoiler For Handguards
Super Moto Grinder Hand Guards
SXS Carbon Heat Protector
Color: Orange

Key Competitors For The 2006 KTM SX

2006 Yamaha YZ 125
2006 Yamaha TT-R 125LE
2006 Yamaha TT-R 230
2006 Yamaha YZ 250F
2006 Yamaha WR 250F
2006 United Motors DTF 110
2006 Suzuki DR-Z 125L
2006 Honda CRF® 450R
2006 Honda CRF® 250X