2011 KTM Ride Impressions 2




Is this the sweetest-looking and most feature-packed KTM yet? We'd say so. The KTM 350 SX-F.

Wow, has KTM come a long way in the last few years. We can remember a time (at least for motocross use) when they were more of a high-priced novelty than something you'd seriously consider as your primary race bike. But they've made steady progress, and for 2011, they're pulling out all the stops, with a trio of four-strokes ready to go head-to-head with everyone else, and open some eyes and minds. But they also haven't forgotten their two-stroke lineup, and offer everything from 50cc to 250cc race bikes. But this time around we're going to focus on the new 350 SX-F, and seriously updated 250 SX-F.







Call the myth that KTM would never have a linkage system on their MX bikes busted. The linkage is found on all the four-stroke models, while the two-stroke bikes will retain KTM's familiar linkless PDS system.

This year all of KTM's MX bikes have a new chromoly frame that uses a variety of tubes in interesting shapes to increase torsional rigidty and reduce longitudinal stiffness (it helps absorb energy from big rear wheel impacts). Other benefits claimed for the chassis by KTM? That it's lighter than aluminum, is easier to maintane and work on, as well as providing more room for the fuel tank and other components on the bike.


Depending on whether the bike is a two- or four-stroke, the rear suspension is either their familiar PDS (linkless) design, or a new linkage system for the four-strokes. KTM found that the different engine characteristics and center of gravity of the two- and four-stroke bikes, that the PDS system was a better solution for the pre-mix bikes. The PDS system will also remain in the offroad lineup.


There are new cast aluminum designs for the swingarm, whether on the PDS or linkage bikes. That gives them more latitude in their design, and greater consistency among the individual parts, as well as the flex characteristics they wanted for the new frame.









The WP shock is desiged to handle the higher shaft velocities that you'll find on the linkage system,

As far as the shock components, of course you've got two different shocks for the PDS design still found on the two-stroke models, as well as the newer linkage design on the SX-F bikes. At 410mm and with a 108mm stroke, the PDS shock is now longer than before, and uses a different rising rate profile. The linkage shock is 490mm with a 136mm stroke, and is specifically designed for the linkage bikes with a new piston and bushing design. The goal there? To be better able to handle the increased shock shaft velocities by providing a consistent seal, as well as reducing friction.





A 48mm WP fork handles the front suspension duties.

Up front on the full-size SX models, you'll find the latest-gen WP 48mm fork, which features WP closed cartridge tecnhology, and they're mated to a set of CNC-machined KTM aluminum triple clamps.


A quick look at any photo will show you the sleek new bodywork, which is designed to be slim, but with good contact points for hanging onto the bike. Add in a longer rear fender and an airbox that doesn't require any tools for access, and you've got a KTM that looks better than ever.







The new 350cc engine. Five years from now, will we look at this as a novelty, or an engine that changed the face of motocross? Time will tell.

Of course a lot of the attention this year is focused on the all-new 350cc powerplant. This DOHC engine features an extremely short stroke (57.5mm), and an 88mm bore, four titanium valves, and a 13,000 RPM limit. It's all controlled by a 42mm Keihin throttle body that monitors the usual functions, like temperatures (hot and cold), altitude, etc. Like many of the other EFI systems we've seen, there's a separate mapping tool that allows you to change EFI and ignition maps. All of it is mated to a five-speed transmission.


Yep, the 350 features the magic button electric start, but can also be outfitted with a Power Parts kit to retrofit a kickstarter, and give you the option of removing the E-start, or using both.


The 250 also has fuel injection, and an option to add the E-start.





We like smart features like an easy-to-access airbox, and love the high-end goodies sprinkled over the bike.

Of course, all the KTMs are still chock-full of name-brand goodies, like a hydraulic clutch, Renthal bar and grips, Twin Air filter, CNC-machined hubs, Brembo brakes, wave rotors, and Excel rims.


Check out the following two videos to get a look at a real-world impression of how the new 250 and 350 worked on the track.


Ride Impression: 2011 KTM 350SX-F











Ride Impression: 2011 KTM 250 SX-F











2011 KTM Model Specifications


KTM 50 SX Mini (OI)



Changes at a glance:

New decals

New color for the rear fender (white) and front number plate.

Suggested Retail: $3,299

Engine: Single Cylinder 2-Stroke, Case Reed Induction, Liquid Cooled, Oil Injection

Displacement: 49cc

Bore/Stroke: 39.5/40mm

Compression Ratio:

Starter: kick starter

Transmission: single gear automatic

Carburetor: Dell'Orto PHVA 12 XS

Exhaust Control:

Engine Lubrication: oil injection

Transmission lubrication: 0.20 l Motorex ATF Super

Primary ratio: 33:61

Drive Chain: 1/2 x 3/16" 104 R

Cooling: liquid cooled

Clutch: centrifugal clutch (adjustable)

Ignition: Seletra 2p D36 analog


CHASSIS

Frame: chromoly central tube frame

Subframe: steel

Handlebar: aluminium √ò 22mm

Front suspension: Marzocchi √ò 32mm

Rear suspension: WP 3614 BAEM monoshock

Suspension travel front/rear: 110/171mm / 4.3"/6.7"

Front Brake: disc brake √ò 160 mm

Rear brake: disc brake √ò 140 mm

Front / rear rims: 1.6 x 10" / 1.6 x 10" aluminum

Front / rear tires: 2.50 x 10" / 2.75 x 10"

Final Drive: 10:42

Main silencer: aluminum

Steering head angle: 22.6°

Wheelbase: 914mm ±10mm

Ground clearance (unloaded): 184mm/7.2"

Seat height: 530/558mm/20.9/21.96" (adjustable)

Fuel Capacity: approx. 2.0 liters/0.528 U.S. gallons

Total weight (DRY): approx. 39.0 kgs/85.98 lbs.


KTM 50 SX


Suggested Retail: $3,699

ENGINE Single Cylinder 2-Stroke, Case Reed Induction, Liquid Cooled

Displacement: 49cc

Bore/Stroke: 39.5/40mm

Compression Ratio:

Starter: kick starter

Transmission: single gear automatic

Carburetor: Dell'Orto PHBG 19 BS

Exhaust Control:

Engine Lubrication: lubrication mixture 40:1

Transmission lubrication: 0.20 l Motorex ATF Super

Primary ratio: 33:61

Drive Chain: 1/2 x 3/16" 104 R

Cooling: liquid cooled

Clutch: centrifugal clutch (adjustable)

Ignition: Seletra 2p D36 analog


CHASSIS

Frame: chromoly central tube frame

Subframe: steel

Handlebar: aluminium √ò 22 mm

Front suspension: Marzocchi √ò 32 mm

Rear suspension: WP 3614 BAEM monoshock

Suspension travel front/rear: 185/185mm / 7.3/7.3"

Front Brake: disc brake √ò 160 mm

Rear brake: disc brake √ò 140 mm

Front / rear rims: 1.6 x 12" / 1.6 x 10" aluminum

Front / rear tires: 60/100-12" / 2.75 x 10"

Final Drive: 11:40

Main silencer: aluminum

Steering head angle: 24°

Wheelbase: 1032mm ±10mm

Ground clearance (unloaded): 252mm/9.92"

Seat height: 650/684mm/25.6/26.9" (adjustable)

Fuel Capacity: approx. 2.3 liters/0.6 U.S. gallons

Total weight (DRY): approx. 39.8 kgs/87.7 lbs.


KTM 65 SX



Changes at a glance:

New decals

New color for the rear fender, front fork protectors, and front number plate.

Suggested Retail: $4,399

ENGINE Single Cylinder, 2-Stroke, Case Reed Induction, Liquid Cooled

Displacement: 64.85cc

Bore/Stroke: 45/40.8mm

Compression Ratio:

Starter: kick starter

Transmission: 6 gears

Carburetor: Mikuni TM 24

Exhaust Control: Power Valve PCEV

Engine Lubrication: lubrication mixture 40:1

Transmission lubrication: 0.5 l Motorex Topspeed 15W50

Primary ratio: 23:75

Drive Chain: 1/2 x 1/4" 112 R

Cooling: liquid cooled

Clutch: wet multi-disc clutch, operated hydraulically

Ignition: AET Digital


CHASSIS

Frame: chromoly central tube frame

Subframe: aluminum

Handlebar: aluminium √ò 22 mm

Front suspension: Marzocchi USD √ò 35 mm

Rear suspension: WP 3614 BAVP monoshock

Suspension travel front/rear: 220/270mm / 8.7/10.6"

Front Brake: disc brake √ò 198 mm

Rear brake: disc brake √ò 160 mm

Front / rear rims: 1.6 x 14" / 1.6 x 12" aluminum

Front / rear tires: 60/100-14" / 80/100-12"

Final Drive: 14:50

Main silencer: aluminum

Steering head angle: 25.5°

Wheelbase: 1137mm ±10mm/44.8" ±.4"

Ground clearance (unloaded): 280mm/11.02"

Seat height: 750mm/29.5"

Fuel Capacity: approx. 3.5 liters/0.98 U.S. gallons

Total weight (DRY): approx. 55.4 kgs/122.1 lbs.


KTM 85 SX



Changes at a glance:

New decals

New color for the rear fender, fork protector, and front number plate

New larger rear wave-type rotor (210mm instead of 200mm) by Braking

New radially mounted two-piston rear brake caliper

Reworked front fork with new setting


Suggested Retail: $5,199

ENGINE Single Cylinder, 2-Stroke, Case Reed Induction, Liquid Cooled

Displacement: 84.93cc

Bore/Stroke: 47/48.95mm

Compression Ratio:

Starter: kick starter

Transmission: 6 gears

Carburetor: Keihin PWK 28

Exhaust Control: Power Valve

Engine Lubrication: lubrication mixture 40:1

Transmission lubrication: 0.5 l Motorex Topspeed 4T 15W-50

Primary ratio: 19:66

Drive Chain: 1/2 x 5/16" 122 R

Cooling: liquid cooled

Clutch: wet multi-disc clutch, operated hydraulically

Ignition: Moric digital 2M1


CHASSIS

Frame: chromoly central tube frame

Subframe: aluminum

Handlebar: aluminium √ò 22 mm

Front suspension: WP USD 43

Rear suspension: WP PDS 4618 monoshock

Suspension travel front/rear: 275/300mm / 10.8/11.8"

Front Brake: disc brake √ò 220mm

Rear brake: disc brake √ò 210mm

Front / rear rims: 1.6 x 17" / 1.85 x 14" aluminum

Front / rear tires: 70/100-17" / 90/100-14"

Final Drive: 14:46

Main silencer: aluminum

Steering head angle: 24°

Wheelbase: 1290mm ±10mm

Ground clearance (unloaded): 385mm/15.2"

Seat height: approx. 865 mm/34.1"

Fuel Capacity: approx. 5.1 liters/1.34 U.S. gallons

Total weight (DRY): approx. 66 kgs/145.5 lbs.


KTM 105 SX



Changes at a glance:

New decals

New color for the rear fender, front fork protectors, and front number plate.


ENGINE Single Cylinder, 2-Stroke, Case Reed Induction, Liquid Cooled

Displacement: 103.96cc

Bore/Stroke: 52/48.95mm

Compression Ratio:

Starter: kick starter

Transmission: 6 gears

Carburetor: Keihin PWK 28

Exhaust Control: Power Valve

Engine Lubrication: lubrication mixture 40:1

Transmission lubrication: 0.5 l Motorex Topspeed 4T 15W-50

Primary ratio: 19:66

Drive Chain: 1/2 x 5/16" 122 R

Cooling: liquid cooled

Clutch: wet multi-disc clutch, operated hydraulically

Ignition: Moric digital 2M1


CHASSIS

Frame: chromoly central tube frame

Subframe: aluminum

Handlebar: aluminium √ò 22 mm

Front suspension: WP USD 43

Rear suspension: WP PDS 4618 monoshock

Suspension travel front/rear: 275/300mm / 10.8/11.8"

Front Brake: disc brake √ò 220mm

Rear brake: disc brake √ò 200mm

Front / rear rims: 1.6 x 19" / 1.85 x 16" aluminum

Front / rear tires: 70/100-19" / 90/100-16"

Final Drive: 14:49

Main silencer: aluminum

Steering head angle: 24°

Wheelbase: 1290mm ±10mm

Ground clearance (unloaded): 415mm/16.3"

Seat height: approx. 900 mm/35.4"

Fuel Capacity: approx. 5.1 liters/1.34 U.S. gallons

Total weight (DRY): approx. 68 kgs/149.9 lbs.


KTM 150 SX



Changes at a glance:

New frame and swingarm

New PDS shock

New silver Excel wheels with zink/nickle-coated spokes

New bodywork

New silencer

New airbox design

Air flow optimized intake boot between filter and carb


Suggested Retail: $6,299

ENGINE Single Cylinder, 2-Stroke, Case Reed Induction, Liquid Cooled

Displacement: 143.6cc

Bore/Stroke: 56/58.4mm

Compression Ratio: -

Starter: kick starter

Transmission: 6 gears, SX Ratios

Carburetor: Keihin PWK 38 S AG

Exhaust Control: TVC

Engine Lubrication: lubrication mixture 40:1

Transmission lubrication: Motorex Top Speed 15W50, capacity 700cc

Primary ratio: 23:73

Drive Chain: 520 chain 5/8 x 1/4"

Cooling: liquid cooled

Clutch: wet multi-disc clutch, operated hydraulically

Ignition: Kokusan digital 2K-1


CHASSIS

Frame: chromoly central tube frame

Subframe: aluminum 7020

Handlebar: tapered Renthal √ò 28/22mm

Front suspension: WP-USD √ò 48mm Closed-Cartridge

Rear suspension: WP-PDS 5018 DCC shock absorber

Suspension travel front/rear: 300mm/336mm / 11.8"/13.2"

Front Brake: 260mm/10.2" disc, Brembo double piston caliper

Rear brake: 220mm/8.65" disc, Brembo single piston caliper

Front / rear rims: 1.60 x 21" / 2.15 x 19" Excel

Front / rear tires: Bridgestone M59 80/100-21";

Bridgestone M70 100/90-19"

Final Drive: 14/50

Main silencer: aluminum

Steering head angle: 26.5°

Wheelbase: 1480mm±10mm/58.27" ±.4"

Ground clearance (unloaded): 395mm/15.55"

Seat height: 992mm/39.06"

Fuel Capacity: 7.5 liters/1.98 U.S. gallons

Total weight (DRY): approx. 89kg/196lbs.


KTM 250 SX



Changes at a glance:

New frame and swingarm

New PDS shock

New silver Excel wheels with zink/nickle-coated spokes

New bodywork

New airbox design

Air flow optimized intake boot between filter and carb

New exhaust

New silencer

Newly developed cylinder with lower exhaust port, new timing, and optimized exhaust control

Noticeable increas in performance

Higher torque

Better rideability


Suggested Retail: $6,699

ENGINE Single Cylinder, 2-Stroke, Case Reed Induction, Liquid Cooled

Displacement: 249cc

Bore/Stroke: 66.4/72mm

Compression Ratio: -

Starter: kick starter

Transmission: 5 gears, SX Ratios

Carburetor: Keihin PWK 36 S AG

Exhaust Control: TVC

Engine Lubrication: lubrication mixture 40:1

Transmission lubrication: Motorex Top Speed 15W50, capacity 700 cc

Primary ratio: 26:72

Drive Chain: 520 chain 5/8 x 1/4"

Cooling: liquid cooled

Clutch: wet multi-disc clutch, operated hydraulically

Ignition: Kokusan digital 2K-1 stator w/2K-2 flywheel


CHASSIS

Frame: chromoly central tube frame

Subframe: aluminum 7020

Handlebar: tapered Renthal √ò 28/22mm

Front suspension: WP-USD √ò 48mm Closed-Cartridge

Rear suspension: WP-PDS 5018 DCC shock absorber

Suspension travel front/rear: 300mm/336mm / 11.8"/13.2"

Front Brake: 260mm/10.2" disc, Brembo double piston caliper

Rear brake: 220mm/8.65" disc, Brembo single piston caliper

Front / rear rims: 1.60 x 21" / 2.15 x 19" Excel

Front / rear tires: Bridgestone M59 80/100-21";

Bridgestone M70 110/90-19"

Final Drive: 13/48

Main silencer: aluminum

Steering head angle: 26.5°

Wheelbase: 1495mm ±10mm/58.86" ±.4"

Ground clearance (unloaded): 385mm/15.2"

Seat height: 992mm/39.06"

Fuel Capacity: 7.5 liters/1.98 U.S. gallons

Total weight (DRY): approx. 94.2kg/207.7lbs.


KTM 250 SX-F



Suggested Retail: $7,699

ENGINE single cylinder, 4-stroke, Liquid Cooled

Displacement: 248.6cc

Bore/Stroke: 76/54.80mm

Compression Ratio: 13.2:1

Starter: kick starter

Transmission: 6 gears, SX Ratios

Carburetor: Keihin 42mm throttle body EFI

Exhaust Control: Two Exhaust Valves

Engine Lubrication: pressure lubrication with 2 Eaton pumps

Transmission lubrication: Motorex Top Speed 15W50, capacity 1.2 L

Primary ratio: 22:68

Drive Chain: 520 chain 5/8 x 1/4"

Cooling: liquid cooled

Clutch: wet multi-disc clutch, operated hydraulically

Ignition: Kokusan digital


CHASSIS

Frame: chromoly central tube frame

Subframe: aluminum 7020

Handlebar: tapered Renthal √ò 28/22mm

Front suspension: WP-USD √ò 48mm Closed-Cartridge

Rear suspension: WP 5018 BAVP DCC shock absorber

Suspension travel front/rear: 300mm/317mm / 11.8"/12.48"

Front Brake: 260mm/10.2" disc, Brembo double piston caliper

Rear brake: 220mm/8.65" disc, Brembo single piston caliper

Front / rear rims: 1.60 x 21" / 2.15 x 19" Excel

Front / rear tires: Bridgestone M59 80/100-21";

Bridgestone M70 110/90-19"

Final Drive: 13/48

Main silencer: aluminum

Steering head angle: 26.5°

Wheelbase: 1495mm ±10mm/58.86" ±.4"

Ground clearance (unloaded): 375mm/14.76"

Seat height: 992mm/39.06"

Fuel Capacity: 7.5 liters/1.98 U.S. gallons

Total weight (DRY): approx. 100.5 kg/221.6 lbs.


KTM 350 SX-F



Suggested Retail: $8,499

ENGINE single cylinder, 4-stroke, DOHC, 4-Valve, Liquid Cooled

Displacement: 349.7cc

Bore/Stroke: 88/57.5mm

Compression Ratio: 13.5:1

Starter: electric starter

Transmission: 5 gears, SX Ratios

Carburetor: Keihin 42mm throttle body EFI

Exhaust Control: Two Exhaust Valves

Engine Lubrication: pressure lubrication with 2 Eaton pumps

Transmission lubrication: Motorex Top Speed 15W50, capacity 1.1 L

Primary ratio: 24:73

Drive Chain: 520 chain 5/8 x 1/4"

Cooling: liquid cooled

Clutch: wet multi-disc clutch, operated hydraulically

Ignition: Kokusan digital


CHASSIS

Frame: chromoly central tube frame

Subframe: aluminum 7020

Handlebar: tapered Renthal √ò 28/22mm

Front suspension: WP-USD √ò 48mm Closed-Cartridge

Rear suspension: WP 5018 BAVP DCC shock absorber

Suspension travel front/rear: 300mm/317mm / 11.8"/12.48"

Front Brake: 260mm/10.2" disc, Brembo double piston caliper

Rear brake: 220mm/8.65" disc, Brembo single piston caliper

Front / rear rims: 1.60 x 21" / 2.15 x 19" Excel

Front / rear tires: Bridgestone M59 80/100-21";

Bridgestone M70 110/90-19"

Final Drive: 14/50

Main silencer: aluminum

Steering head angle: 26.5°

Wheelbase: 1495mm ±10mm/58.86" ±.4"

Ground clearance (unloaded): 375mm/14.76"

Seat height: 992mm/39.06"

Fuel Capacity: 7.5 liters/1.98 U.S. gallons

Total weight (DRY): approx. 104.4kg/230.2lbs.


KTM 450 SX-F



Suggested Retail: $8,799

ENGINE single cylinder, 4-stroke, DOHC, 4-Valve, Liquid Cooled

Displacement: 449.3cc

Bore/Stroke: 97/60.8mm

Compression Ratio: 12.5:1

Starter: electric starter

Transmission: 5 gears, SX Ratios

Carburetor: Keihin MX FCR 41

Exhaust Control: Two Exhaust Valves

Engine Lubrication: pressure lubrication with 3 Eaton pumps

Transmission lubrication: Motorex Top Speed 15W50, capacity 1.35 L

Primary ratio: 29:74

Drive Chain: 520 chain 5/8 x 1/4"

Cooling: liquid cooled

Clutch: wet multi-disc clutch, operated hydraulically

Ignition: Kokusan digital


CHASSIS

Frame: chromoly central tube frame

Subframe: aluminum 7020

Handlebar: tapered Renthal √ò 28/22mm

Front suspension: WP-USD √ò 48mm Closed-Cartridge

Rear suspension: WP 5018 BAVP DCC shock absorber

Suspension travel front/rear: 300mm/317mm / 11.8"/12.48"

Front Brake: 260mm/10.2" disc, Brembo double piston caliper

Rear brake: 220mm/8.65" disc, Brembo single piston caliper

Front / rear rims: 1.60 x 21" / 2.15 x 19" Excel

Front / rear tires: Bridgestone M59 80/100-21";

Bridgestone M70 110/90-19"

Final Drive: 14/52

Main silencer: aluminum

Steering head angle: 26.5°

Wheelbase: 1495mm ±10mm/58.86" ±.4"

Ground clearance (unloaded): 371mm/14.61"

Seat height: 985mm/38.8"

Fuel Capacity: 7.5 liters/1.98 U.S. gallons

Total weight (DRY): approx. 107.4kg/236.8lbs.


Retail Prices Do Not Include the

Following Items:

» Destination Charges

$165 each 50cc-65cc

$195 each 85cc-105cc

$265 each 125cc-550cc


» Pre-Delivery Set-Up Minimum: $200.00 per unit (all sizes)

» State or Local Taxes, Title, Registration, License Fees

» Financing, Insurance, Document Fees

» Extended Warranties, Maintenance Agreements

*California Green Stickers and U.S. EPA Off-Highway emission compliant models.


Prices, specifications and programs are subject to change without notice.

2 comments

View replies to: 2011 KTM Ride Impressions

Comments

The Latest