2013 Motocross Bike Buyers Guide

Over the course of the next few pages, your argument that last year's model bike is just as competitive as ever will lose its believability. With countless improvements made to nearly every model, along with the release of two all-new bikes, the 2013 releases show the rate at which our sport is advancing. The most standout bike for next year is easily Honda's CRF450R, with its all-new aluminum frame, Kayaba PSF (Pneumatic Spring Fork) air fork, and dual exhaust. Not to be outdone is KTM, with their specially crafted 450SX-F that Ryan Dungey piloted to their first US 450 title.
The Honda is not the only model to feature Kayaba's PSF fork, as Kawasaki's KX450F is also outfitted with the compressed air units. After making its debut on last year's KX250F, the Showa Single Function Fork has spread onto both of Suzuki's RM-Zs, while KTM has continued to revalve their WP units to suit the American market. With all full-size machines running 11 to 12 inches of suspension travel, they are a far cry from the bikes of yesteryear.
Those longing for the nostalgia are not forgotten, as two-strokes are still carried in Yamaha, Husqvarna, and KTM's lines. The lack of change to the six screamers is a sore subject for some, yet we look at it this way: why mess with a good thing? As long as we continue to hear and smell the pre-mix burners, you will not hear a complaint from us.
As we continue to progress through this decade, one cannot help but think about the flying cars and self-tying shoes we were "promised." Sadly, this is not a Hanna-Barbera-Spielberg creation and we are still bound to our dreary, simple duties. However, knowing you have the chance to swing a leg over any of the 2013 race bikes should be enough to make you realize how good we have it.

125 TWO-STROKES

KTM 125 SX

$6,449
Displacement - 124.8 cc
Engine Type - Single cylinder, two-stroke
Claimed Dry Weight - 200.2 lbs.
Bore X Stroke - 54 x 54.5 mm
Compression Ratio - N/A
Carburetion - Keihin PWK 38S AG
Ignition - Kokusan
Transmission - Six-speed multi-disc clutch
Fuel Capacity - 1.98 gal.
Frame - Chromoly central tube
Wheelbase - 58.27 in.
Rake - 63.5 degrees
Seat Height - 39.06 in.
Tires - (F) 80/100-21, (R) 100/90-19
Suspension Travel - (F) 11.81 in., (R) 12.99 in.
Front Brake - 260 mm disc
Rear Brake - 220 mm disc
Final Drive - Chain
Handlebar - Tapered Renthal Aluminum
Yamaha YZ125 
$6,290
Displacement - 124 cc
Engine Type - Liquid-cooled two-stroke, reed-valve inducted
Curb Weight - 207 lbs.
Bore X Stroke - 54.0 x 54.5 mm
Compression Ratio - 10.7:1
Carburetion - Mikuni TMX 38
Ignition - C.D.I.
Transmission - Constant-mesh six-speed; multi-plate wet clutch
Fuel Capacity - 2.1 gal.
Frame - Aluminum frame
Wheelbase - 56.8 in.
Rake - N/A
Seat Height - 39.3
Tires - (F) 80/100-21, (R) 100/90-19
Suspension Travel - (F) 11.8 in., (R) 12.4 in.
Front Brake - Hydraulic single disc brake, 250 mm
Rear Brake - Hydraulic single disc brake, 245 mm
Final Drive - Chain
Handlebar - Aluminum Pro Taper
Husqvarna CR125 
$6,299
Displacement - 124 cc
Engine Type - Two-stroke power valve with mechanical control
Curb Weight - 207.2 lbs.
Bore X Stroke - 54 x 54.5 mm
Compression Ratio - 8.8:1
Carburetion - Mikuni TMX38
Ignition - Electronic with Variable Advance
Transmission - Six-speed
Fuel Capacity - 1.85 gal.
Frame - Steel
Wheelbase - 57.9 in.
Rake - 26.5 degrees
Seat Height - 38.8 in.
Tires - (F) 80/100-21, (R) 100/90-19
Suspension Travel - (F) 11.8 in., (R) 11.6 in.
Front Brake - 260 mm disc brake
Rear Brake - 240 mm disc brake
Final Drive - Chain
Handlebar - Aluminum
KTM 150 SX 

$6,549
Displacement - 143.6 cc
Engine Type - single-cylinder, two-stroke
Claimed Dry Weight - 200.2 lbs.
Bore X Stroke - 56 x 58.4 mm
Compression Ratio - N/A
Carburetion - Keihin PWK 38S AG
Ignition - Kokusan
Transmission - Six-speed multi-disc clutch
Fuel Capacity - 1.98 gal.
Frame - Chromoly central tube
Wheelbase - 58.27 in.
Rake - 63.5 degrees
Seat Height - 39.06 in.
Tires - (F) 80/100-21, (R) 100/90-19
Suspension Travel - (F) 11.81 in., (R) 12.99 in.
Front Brake - 260 mm disc brake
Rear Brake - 220 mm disc brake
Final Drive - Chain
Handlebar - Tapered Renthal Aluminum

250 FOUR-STROKES

KTM 250 SX-F 
$7,899
Displacement - 249.91 cc
Engine Type - Single-cylinder, four-stroke
Claimed Dry Weight - 229.7 lbs.
Bore X Stroke - 78 x 52.3 mm
Compression Ratio - N/A
Carburetion - Keihin 42 mm throttle body EFI
Ignition - Kokusan (Digital)
Transmission - Five-speed multi-disc clutch
Fuel Capacity - 1.98 gal.
Frame - Chromoly central tube
Wheelbase - 58.86 in.
Rake - 63.5 degrees
Seat Height - 39.06 in.
Tires - (F) 80/100-21, (R) 100/90-19
Suspension Travel - (F) 11.81 in., (R) 12.48 in.
Front Brake - 260 mm disc brake
Rear Brake - 220 mm disc brake
Final Drive - Chain
Handlebar - Tapered Renthal Aluminum

Suzuki RM-Z250

$7,599
Displacement - 249 cc
Engine Type - Liquid-cooled four-stroke, single-cylinder DOHC
Curb Weight - 235 lbs.
Bore X Stroke - 77 x 53.6 mm
Compression Ratio - 13.5:1
Carburetion - Fuel Injection
Ignition - Electronic ignition (CDI)
Transmission - Five-speed constant mesh
Fuel Capacity - 1.7 gal.
Frame - Twin-spar aluminum
Wheelbase - 58.1 in.
Rake - N/A
Seat Height - 37.6 in.
Tires - (F) 80/100-21, (R) 100/90-19
Suspension Travel - (F) 12.2 in., (R) 12.2 in.
Front Brake - Disc brake
Rear Brake - Disc brake
Final Drive - Chain
Handlebar - Tapered Renthal Aluminum

Honda CRF250R 
$7,420
Displacement - 249 cc
Engine Type - Liquid-cooled, single-cylinder, four-stroke
Curb Weight - 227 lbs.
Bore X Stroke - 76.8 x 53.8 mm
Compression Ratio - 13.2:1
Carburetion - PGM-FI, 46 mm throttle body
Ignition - Full transistor with electronic advance
Transmission - Close-ratio five-speed
Fuel Capacity - 1.5 gal.
Frame - Aluminum twin-spar perimeter
Wheelbase - 58.6 in.
Rake - 27.23 degrees/4.6 in.
Seat Height - 37.4 in.
Tires - (F) 80/100-21, (R) 100/90-19
Suspension Travel - (F) 12.2 in., (R) 12.3 in.
Front Brake - Single 240 mm disc with twin-piston caliper
Rear Brake - Single 240 mm disc
Final Drive - Chain
Handlebar - Renthal Aluminum
Kawasaki KX250F 
$7,599
Displacement - 249 cc
Engine Type - Liquid-cooled, four-stroke single with DOHC and four-valve cylinder head
Curb Weight - 233.6 lbs.
Bore X Stroke - 77 x 53.6 mm
Compression Ratio - 13.8:1
Carburetion - Keihin 43 mm throttle body DFI
Ignition - Digital DC-CDI
Transmission - Five-speed with multi-disc clutch
Fuel Capacity - 1.61 gal.
Frame - Aluminum perimeter
Wheelbase - 58.1 in.
Rake - 28.7 degrees/ 5.0 in.
Seat Height - 37.2 in.
Tires - (F) 80/100-21, (R) 100/90-19
Suspension Travel - (F) 12.4 in., (R) 12.2 in.
Front Brake - 250 mm petal disc with dual-piston caliper
Rear Brake - 240 mm petal disc with single-piston caliper
Final Drive - Chain
Handlebar - Renthal Aluminum
Husqvarna TC250R 
$7,199
Displacement - 249 cc
Engine Type - single-cylinder, four-stroke four-valve DOHC
Curb Weight - 227.7 lbs.
Bore X Stroke - 79 x 50.9 mm
Compression Ratio - 13.5:1
Carburetion - EFI with Keihin D42
Ignition - CDI with adjustable advance
Transmission - Five-speed
Fuel Capacity - 1.7 gallons
Frame - Steel
Wheelbase - 57.5 in
Rake - 26.5 degrees
Seat Height - 38.8 in.
Tires - (F) 80/100-21, (R) 110/90-19
Suspension Travel - (F) 11.8 in. (R) 11.6 in.
Front Brake - Floating 260 mm disc
Rear Brake - Floating 240 mm disc
Final Drive - Chain
Handlebar - Aluminum
Yamaha YZ250F 
$7,290
Displacement - 250 cc
Engine Type - liquid-cooled DOHC four stroke; five valves
Curb Weight - 227 lbs.
Bore X Stroke - 77.0 mm x 53.6 mm
Compression Ratio - 13.5:1
Carburetion - Keihin FCR MX39
Ignition - C.D.I.
Transmission - Constant-mesh five-speed; multi-plate wet clutch
Fuel Capacity - 1.6 gal.
Frame - Aluminum bilateral beam frame
Wheelbase - 58.1 in.
Rake - N/A
Seat Height - 39.0 in.
Tires - (F) 80/100-21, (R) 100/90-19
Suspension Travel - (F) 11.8 in., (R) 12.5 in.
Front Brake - Hydraulic single disc brake, 250 mm
Rear Brake - Hydraulic single disc brake, 245 mm
Final Drive - Chain
Handlebar - Tapered Aluminum


250 TWO-STROKES

KTM 250 SX  
$7,099
Displacement - 249 cc
Engine Type - Single-cylinder, two-stroke
Claimed Dry Weight - 214 lbs.
Bore X Stroke - 66.4 x 72 mm
Compression Ratio - N/A
Carburetion - Keihin PWK 36S AG
Ignition - Kokusan
Transmission - Five-speed, multi-disc clutch
Fuel Capacity - 1.98 gal.
Frame - Chromoly central tube
Wheelbase - 58.86 in.
Rake - 63.5 degrees
Seat Height - 39.06 in.
Tires - (F) 80/100-21, (R) 100/90-19
Suspension Travel - (F) 11.81 in., (R) 12.99 in.
Front Brake - 260 mm disc brake
Rear Brake - 220 mm disc brake
Final Drive - Chain
Handlebar - Tapered Renthal Aluminum
Yamaha YZ 250  
$7,150
Displacement - 249 cc
Engine Type - Liquid-cooled two-stroke, reed-valve inducted
Curb Weight - 227 lbs.
Bore X Stroke - 66.4 x 72.0 mm
Compression Ratio - 10.6:1
Carburetion - Keihin PWK38S
Ignition - C.D.I.
Transmission - Constant-mesh five-speed; multi-plate wet clutch
Fuel Capacity - 2.1 gal.
Frame - Aluminum
Wheelbase - 58.3 in.
Rake - N/A
Seat Height - 39.1
Tires - (F) 80/100 - 21, (R) 110/90-19
Suspension Travel - (F) 11.9 in., (R) 12.4 in.
Front Brake - Hydraulic single disc brake, 250 mm
Rear Brake - Hydraulic single disc brake, 245 mm
Final Drive - Chain
Handlebar - Aluminum Pro Taper


450 FOUR-STROKES

KTM 350 SX-F
$ 8,699
Displacement - 349.7 cc
Engine Type - Single-cylinder, four-stroke
Claimed Dry Weight - 231 lbs.
Bore X Stroke - 88 x 57.5 mm
Compression Ratio - N/A
Carburetion - Keihin 42 mm throttle body EFI
Ignition - Kokhusan (Digital)
Transmission - Five-gear, multi-disc clutch
Fuel Capacity - 1.98 gal.
Frame - Chromoly central tube
Wheelbase - 58.86 in.
Rake - 63.5 degrees
Seat Height - 39.06 in.
Tires - (F) 80/100-21, (R) 100/90-19
Suspension Travel - (F) 11.81 in., (R) 12.48 in.
Front Brake - 260 mm disc brake
Rear Brake - 220 mm disc brake
Final Drive - Chain
Handlebar - Tapered Aluminum Renthal
KTM 450 SX-F
$8,999
Displacement - 449.3 cc
Engine Type - Single-cylinder, four-stroke
Claimed Dry Weight - 234.1 lbs.
Bore X Stroke - 95 x 63.4 mm
Compression Ratio - N/A
Carburetion - Keihin 44 mm throttle body EFI
Ignition - Digital
Transmission - Five-gear, multi-plate clutch
Fuel Capacity - 1.98 gal.
Frame - Chromoly central tube
Wheelbase - 58.86 in.
Rake - 63.5 degrees
Seat Height - 39.06 in.
Tires - (F) 80/100-21, (R) 110/90-19
Suspension Travel - (F) 11.81 in., (R) 12.48 in.
Front Brake - 260 mm disc brake
Rear Brake - 220 mm disc brake
Final Drive - Chain
Handlebar - Tapered Aluminum Renthal
Kawasaki KX450F
$8,699
Displacement - 449 cc
Engine Type - Liquid-cooled, four-stroke single with DOHC and four-valve cylinder head
Curb Weight - 248 lbs.
Bore X Stroke - 96 x 62.1 mm
Compression Ratio - 12.5:1
Carburetion - DFI with 43 mm Keihin throttle body
Ignition - Digital DC-CDI
Transmission - Five-speed
Fuel Capacity - 1.64 gal.
Frame - Aluminum perimeter
Wheelbase - 58.3 in
Rake - 26.9 degrees/ 4.4 in.
Seat Height - 37.6 in
Tires - (F) 80/100-21 (R) 120/80-19
Suspension Travel - (F) 12.4 in., (R) 12.4 in.
Front Brake - 250 mm petal disc with dual-piston caliper
Rear Brake - 240 mm petal disc with single-piston caliper
Final Drive - Chain
Handlebar - Renthal Aluminum
Suzuki RM-Z450
$8,699
Displacement - 449 cc
Engine Type - Liquid-cooled four-stroke, single-cylinder DOHC
Curb Weight - 249 lbs.
Bore X Stroke - 96 x 62.1 mm
Compression Ratio - 12.5:1
Carburetion - Fuel Injection
Ignition - Electronic ignition (CDI)
Transmission - Five-speed constant mesh
Fuel Capacity - 1.6 gal.
Frame - Twin-spar aluminum
Wheelbase - 58.9 in.
Rake - N/A
Seat Height - 37.6 in.
Tires - (F) 80/100-21, (R) 110/90-19
Suspension Travel - (F) 12.2 in., (R) 12.2 in.
Front Brake - Disc brake
Rear Brake - Disc brake
Final Drive - Chain
Handlebar - Tapered Renthal Aluminum
Honda CRF450R
$8,440
Displacement - 449 cc
Engine Type - Liquid-cooled, single-cylinder, four-stroke
Curb Weight - 242.7 lbs.
Bore X Stroke - 96 x 62.1 mm
Compression Ratio - 12.5:1
Carburetion - PGM-FI, 46 mm throttle body
Ignition - Full transistor with electronic advance
Transmission - Close-ratio five-speed
Fuel Capacity - 1.66 gal.
Frame - Aluminum twin-spar perimeter
Wheelbase - 58.7 in.
Rake - 27.04 degrees/4.57 in.
Seat Height - 37.5 in.
Tires - (F) 80/100-21, (R) 120/80-19
Suspension Travel - (F) 12.2 in., (R) 12.5 in.
Front Brake - Single 240 mm disc with twin-piston caliper
Rear Brake - Single 240 mm disc
Final Drive - Chain
Handlebar - Renthal Aluminum
Yamaha YZ450F
$8,490
Displacement - 449 cc
Engine Type - Liquid-cooled DOHC four-stroke; four valves
Curb Weight - 245 lbs.
Bore X Stroke - 97.0 x 60.8 mm
Compression Ratio - 12.5:1
Carburetion - Keihin 44 mm, Yamaha Fuel Injection
Ignition - T.C.I.
Transmission - Constant-mesh five-speed, multi-plate wet clutch
Fuel Capacity - 1.6 gal.
Frame - Aluminum bilateral beam frame
Wheelbase - 58.7 in.
Rake - N/A
Seat Height - 39.4 in.
Tires - (F) 80/100-21, (R) 120/90-19
Suspension Travel - (F) 12.2 in., (R) 12.4 in.
Front Brake - Hydraulic single disc brake, 250 mm
Rear Brake - Hydraulic single disc brake, 245 mm
Final Drive - Chain
Handlebar - Tapered Aluminum
Husqvarna TC449
$7,999
Displacement - 449 cc
Engine Type - Single-cylinder, four-stroke four-valve DOHC
Curb Weight - 238.1lbs.
Bore X Stroke - 98 x 59.6 mm
Compression Ratio - 13.0 x1
Carburetion - EFI with Keihin D46
Ignition - CDI electric with variable advance
Transmission - Five-speed
Fuel Capacity - 2.10 gal.
Frame - Steel
Wheelbase - 58.7 in.
Rake - 25.8 degrees
Seat Height - 37.9 in.
Tires - (F) 80/100-21, (R) 110/90-19
Suspension Travel - (F) 11.8 in., (R) 11.8 in.
Front Brake -260 mm disc
Rear Brake -240 mm disc
Final Drive - Chain