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          2009 AMA Racing Stock Class Approved Motorcycles               2009 AMA Racing Stock Class Approved Motorcycles                       2009 AMA Racing Stock Class Approved Motorcycles                 2009 AMA Racing Stock Class Approved Motorcycles                 2009 AMA Racing Stock Class Approved Motorcycles                 2009 AMA Racing Stock Class Approved Motorcycles               2009 AMA Racing Stock Class Approved Motorcycles                
                                                                                                                                         
Manufacturer COBRA COBRA COBRA HONDA HONDA HONDA HONDA HONDA Manufacturer HONDA HONDA HONDA HUSABERG HUSABERG KAWASAKI KAWASAKI KAWASAKI Manufacturer KAWASAKI KAWASAKI LEM LEM LEM KTM KTM KTM Manufacturer KTM KTM KTM KTM KTM KTM KTM KTM Manufacturer KTM KTM KTM KTM KTM KTM KTM KTM Manufacturer KTM POLINI POLINI POLINI SUZUKI SUZUKI SUZUKI YAMAHA Manufacturer YAMAHA Yamaha Yamaha Yamaha Yamaha Yamaha Yamaha Manufacturer Yamaha Yamaha Yamaha Yamaha Manufacturer  
Model CX50JR CX50SR CX 65 CRF50F9 CRF150RB9 CFR150R9 CFR250R9 CRF250X9 Model CRF250XL9 CFR450R9 CRF450X9 FE 450 FE 750 KX 65 KX 85 KX 100 Model KX 250F KX 450F RX2 RX3 RX65 50 SX Mini 50 SX Junior 50 SX Model 65 XC 65 SX 85 XC 85 SX 105 XC 105 SX 125 SX 150 SX Model 200 XC 250 XC 250 SX 250 XC-F 250 SX-F 300 XC 450 XC-F 450 SX-F Model 505 XC-F X1R X3R XP65R RM85 RM-Z250 RM-Z450 TTR-50E Model    PW50 Oil Injected YZ85Y TTR-110 TTR125E YZ125Y TT-R230 YZ250 Model YZ250FY WR250FY YZ450FY WR450FY Model  
Model Year 2009 2009 2009 2009 2009 2009 2009 2009 Model Year 2009 2009 2009 2009 2009 2009 2009 2009 Model Year 2009 2009 2009 2009 2009 2009 2009 2009 Model Year 2009 2009 2009 2009 2009 2009 2009 2009 Model Year 2009 2009 2009 2009 2009 2009 2009 2009 Model Year 2009 2009 2009 2009 2009 2009 2009 2009 Model Year 2009 2009 2009 2009 2009 2009 2009 Model Year 2009 2009 2009 2009 Model Year  
Bore 39 mm 39 mm 44.5 mm 39.0 mm 66 mm 66 mm 78 mm 78 mm Bore 78 mm 96 mm 96.0 mm 95.0 mm 100.0 mm 44.5 mm 48.5 mm 52.5 mm Bore 77.0 mm 96.0 mm 39 MM 39 in. 44.5 MM 39.5 mm 39.5 mm 39.5 mm Bore 45.0 mm 45.0 mm 47.0 mm 47.0 mm 52.0 mm 52.0 mm 54.0 mm 56.0 mm Bore 64.0 mm 66.4 mm 66.4 mm 76.0 mm 76.0 mm 72.0 mm 97.0 mm 97.0 mm Bore 100.0 mm 40.2 mm 40.2 mm 45 mm 48.0 mm 77.0 mm 96.0 mm 36mm Bore 40 mm 47.5 mm 51 mm 54 mm 54 mm 70 mm 66.4 mm Bore 77 mm 77 mm 95 mm 95 mm Bore  
Stroke 41.7 mm 41.7 mm 41.7 mm 41.4 mm 43.7 mm 43.7 mm 52.2 mm 52.2 mm Stroke 52.2 mm 62.1 mm 62.1 mm 63.4 mm 72.0 mm 41.6 mm 45.8 mm 45.8 mm Stroke 53.6 mm 62.1 mm 41.7 MM 41.7 in. 41.75 MM 40.0 mm 40.0 mm 40.0 mm Stroke 40.8 mm 40.8 mm 48.95 mm 48.95 mm 48.95 mm 48.95 mm 54.25 mm 58.3 mm Stroke 60.0 mm 72.0 mm 72.0 mm 55.0 mm 55.0 mm 72.0 mm 60.8 mm 60.8 mm Stroke 60.8 mm 39.2 mm 39.2 mm 40.8 mm 46.8mm 53.6 mm 62.1 mm 48.6mm Stroke 39.2 mm 47.8 mm 54 mm 54 mm 54.5 mm 58 mm 72.0mm Stroke 53.6 mm 53.6 mm 63.4 mm 63.4 mm Stroke  
Displacement 49.8cc 49.8cc 64.86cc 49cc 149cc 149cc 249cc 249cc Displacement 249cc 449cc 449cc 449.3cc 565.5cc 64cc 64cc 99cc Displacement 249cc 449cc 49.8cc 49.8cc 64.9cc 49.0cc 49.0cc 49.0cc Displacement 64.85cc 64.85cc 84.93cc 84.93cc 104.9cc 104.9cc 124.8cc 143.6cc Displacement 193.0cc 249.3cc 249.3cc 249.5cc 249.5cc 293.15cc 449.4cc 449.4cc Displacement 477.52cc 49.9cc 49.9cc 64.9cc 84.7cc 249cc 449cc 49cc Displacement 49 CC 84.7cc 110cc 123.7cc 124cc 223cc 249cc Displacement 250cc 250cc 449cc 449cc Displacement  
Cylinder liner Nikasil Nikasil Nikasil Nikasil Nikasil Nikasil Nikasil Nikasil Cylinder liner Nikasil Nikasil Nikasil Plated Plated Electrofusion Electrofusion Electrofusion Cylinder liner Chrome Chrome Nickasil Nickasil Nickasil Plated Plated Plated Cylinder liner Plated Plated Plated Plated Plated Plated Plated Plated Cylinder liner Plated Plated Plated Plated Plated Plated Plated Plated Cylinder liner Plated Nicasil Nicasil Nicasil SCEM SCEM SCEM Steel Cylinder liner Steel Ceramic-comp Steel Steel Ceramic-comp Steel Ceramic-comp Cylinder liner Ceramic-comp Ceramic-comp Ceramic-comp Ceramic-comp Cylinder liner  
Carburation Dell'Orto  14mm  Dell'Orto 19mm Mikuni 24 mm 13 mm Piston Valve Keihin 32 mm Keihin 32 mm 40 mm Keihin Flat-Side 37 mm Keihin flat-side Carburation 37 mm Keihin flat-side PGM-FI, 50 mm throttle body 40.0 mm Keihin flat-side Keihin Keihin Mikuni VM24SS Keihin PWK28 Keihin PWK29 Carburation Keihin FCR37 PFI w/Keihin 43 mm Throttle Body Dell'Orto PHBN 14 MS Dell'Orto PHBG 19 BS Dell'Orto PHBL 24 BS Dell'Orto PHVA 12 XS Dell'Orto PHVA 14 DS Dell'Orto PHBG 19 BS Carburation Mikuni VM 24-505 Mikuni VM 24-505 Keihin PWK 28 Keihin PWK 28 Keihin PWK 28 Keihin PWK 28 Keihin PWK-S 38 AG Keihin PWK-S 38 AG Carburation Keihin PWK-S 36 AG Keihin PWK-S 36 AG Keihin PWK-S 36 AG Keihin MX FCR 39 Keihin MX FCR 39 Keihin PWK-S 36 AG Keihin MX FCR 39 Keihin FCR-MX 41 Carburation Keihin MX FCR 39 Dell'Orto PHBG 19 Dell'Orto PHBG 19 Mikuni 24 Keihin PE28, single Keihin FCR37MXS Fuel Injection Mikuni VM11 Carburation VM12 Mikuni 12mm Keihin® PWK 28 Mikuni® VM16 Mikuni® VM20 Mikuni® TMX 38 Y26P Keihin PWK38S Carburation Keihin FCR MX37 Keihin® FCR 37 Keihin FCR MX39 Keihin® FCR 38 Carburation  
Transmission Single Auto               Transmission                 Transmission     Single auto Single auto 6-speed Single auto Single auto Single Auto Transmission                 Transmission                 Transmission                 Transmission               Transmission         Transmission  
Front Suspension / Travel Marzocchi 32 mm Cobra 32 mm  Marzocchi 35 mm Inverted Telescopic Fork 37 mm Showa Cartridge Fork 37 mm Showa Cartridge Fork 47.0 mm Showa Cartridge Fork 47.0 mm Showa Cartridge Fork Front Suspension / Travel 47.0 mm Showa Cartridge Fork 48 mm KYB (AOS); 12.2" travel 47.0 mm Showa Cartidge Fork; 12.4" travel 48 mm WP-USD; 300 mm Travel 48 mm WP-USD; 300 mm Travel 33 mm Hydralic Telescopic Fork 36 mm Cartridge Fork 37 mm Cartridge Fork Front Suspension / Travel 47 mm Cartridge Fork 48 mm Kayaba AOS Marzocchi / 5.51 in. Marzocchi Marzocchi / 8.66 in. Marzocchi 32mm / 4.33 in. Marzocchi 32mm / 5.51 in. Marzocchi 32mm / 7.28 in. Front Suspension / Travel Marzocchi 35 mm Marzocchi 35 mm WP USD 43 mm WP USD 43 mm WP USD 43 mm WP USD 43 mm WP USD 48 mm WP USD 48 mm Front Suspension / Travel WP USD 48 mm WP USD 48 mm WP USD 48 mm WP USD 48 mm WP USD 48 mm WP USD 48 mm WP USD 48 mm WP USD 48 mm Front Suspension / Travel WP USD 48 mm Paioli 33mm Paioli 33mm Marzocchi USD reg. 35 mm Telescopic pneumatic/coil spring Upside-down telescopic fork Telescopic pneumatic/coil spring Inverted telescopic fork / 3.8 in. Front Suspension / Travel Telescopic fork / 2.4 in.  Inverted fork; fully adjustable /         10.8 in.  Telescopic fork, coil spring/oil damper /         4.5 in.  Telescopic fork / 7.1 in. Speed-sensitive system inverted fork; fully adjustable /          11.8 in. Telesopic fork /    9.5 in.  Speed-Sensitive System inverted fork; fully adjustable /            11.8 in. Front Suspension / Travel Speed-Sensitive System inverted fork; fully adjustable /              11.8 in. Inverted fork; fully adjustable /         11.8 in. Speed-Sensitive System inverted fork; fully adjustable /       11.8 in. Inverted fork; fully adjustable /        11.8 in. Front Suspension / Travel  
Rear Suspension / Travel Ohlins Piggyback Fox Piggyback Ohlins Single-Shock; 2.8 inch travel Showa Single Shock; 10.8" travel Showa Single Shock; 10.8" travel Pro-Link Show Single Shock; 12.4" travel Pro-Link Showa Single Shock; 12.4" travel Rear Suspension / Travel Pro-Link Showa Single Shock; 12.4" travel Pro-Link KYB Single Shock; 12.6" travel Pro-Link Showa Single Shock; 12.4" travel WP-PDS shock absorber; 335 mm travel WP-PDS shock absorber; 335 mm travel Uni-Track w/Piggyback Uni-Track w/adjustable Preload Uni-Track w/adjustable Preload Rear Suspension / Travel Uni-Track w/adjustable Preload Uni-Track w/adjustable Preload Hydraulic mono shock  Hydraulic mono shock  Hydraulic mono shock  WP mono shock /  6.73 in. WP mono shock / 8.07 in. WP mono shock / 7.28 in. Rear Suspension / Travel WP mono shock WP mono shock WP mono shock PDS WP mono shock PDS WP mono shock PDS WP mono shock PDS WP PDS shock absorber WP PDS shock absorber Rear Suspension / Travel WP mono shock PDS WP mono shock PDS WP PDS shock absorber WP mono shock PDS WP PDS shock absorber WP mono shock PDS WP mono shock PDS WP PDS shock absorber Rear Suspension / Travel WP mono shock PDS Adj. Paioli Monoshock Adj. Paioli Monoshock Adj. Ohlins Monoshock Link type, coil spring Swingarm type Link type, coil spring  single shock  / 2.8 in. Rear Suspension / Travel Unit Swingarm /  2 in. Single shock; fully adjustable /     11.1 in. Swingarm Monocross®, coil spring/gas-oil damper  /         4.3-in travel Single shock /  6.3 in. Fully adjustable single shock / 12.4 in. Single Shock /      8.7 in.  Fully adjustable single shock / 12.4 in. Rear Suspension / Travel  Fully adjustable single shock /    12 in. Single shock; fully adjustable /    12.2 in. Single shock; fully adjustable /    12.3 in. Single shock; fully adjustable /       12 in. Rear Suspension / Travel  
Wheelbase 36 in. 40 in. 45 in. 36 in. 50.6 in. 49.6 in. 58.2 in. 58.3 in. Wheelbase 58.3 in. 58.7 in. 58.3 in. 58.07 in. 58.07 in. 44.1 in. 49.4 in. 50.8 in. Wheelbase 57.9 in. 58.27 in. 35.83 38.78 in. 43.9 in. 35.6 in. 35.8 in. 40.5 in. Wheelbase 44.76 in. 44.76 in. 50.3 in. 50.3 in. 50.3 in. 50.3 in. 57.5 in. 57.5 in. Wheelbase 57.9 in. 58.1 in. 58.3 in. 58.1 in. 58.1 in. 58.1 in. 58.1 in. 58.1 in. Wheelbase 58.1 in. 35 in. 40 in. 45 in. 48.8 in. 1,465 mm 1,480 mm 36.4 in. Wheelbase 33.7 in. 49.5 in. 42.5 in. 50 in. 56.8 in. 54.5 in. 58.3 in. Wheelbase 57.8 in. 58.3 in. 58.8 in. 58.5 in. Wheelbase  
Overall Length 1321 mm 1400 mm 1613 mm           Overall Length       84.0 in. 84.0 in. 62.6 in. 71.7 in. 75.2 in. Overall Length 85.43 in. 86.02 in. 41.18 53.54 in. 62.6 in. 51.0 in. 51.0 in. 55.0 in. Overall Length 64 in. 64.0 in. 72.57 in. 72.57 in. 74.1 in. 74.1 in. 84.0 in. 84.0 in. Overall Length 84.0 in. 84.3 in. 84.8 in. 84.0 in. 84.0 in. 84.3 in. 85.0 in. 85.0 in. Overall Length 85.0 in. 40 in. 46 in. 50 in. 71.1 in. 2,165 mm 2,185 mm 51.4 in. Overall Length 49 in. 71.7 in. 61.6 in. 74.2 in. 84.1 in. 81.3 in. 85.7 in. Overall Length 85 in. 85.2 in. 86.4 in. 85.6 in. Overall Length  
Front Wheel size 10 in. 12 in. 14 in. 10 in. 19 in. 17 in. 21 in. 21 in. Front Wheel size 21 in. 21 in. 21 in. 21 in. 21 in. 14 in. 17 in. 19 in. Front Wheel size 21 in. 21 in. 10 in. 12 in. 17 in. 10 in. 10 in. 12 in. Front Wheel size 14 in. 14 in. 17 in. 17 in. 19 in. 19 in. 21 in. 21 in. Front Wheel size 21 in. 21 in. 21 in. 21 in. 21 in. 21 in. 21 in. 21 in. Front Wheel size 21 in. 10 in. 12 in. 14 in. 17 in. 21 in. 21 in. 10 in. Front Wheel size 10 in. 17 in. 14 in. 17 in. 21 in. 21 in. 21 in. Front Wheel size 21 in. 21 in. 21 in. 21 in. Front Wheel size  
Rear Wheel size 10 in. 10 in. 12 in. 10 in. 16 in. 14 in. 19 in. 18 in. Rear Wheel size 18 in. 19 in. 18 in. 18 in. 18 in. 12 in. 14 in. 16 in. Rear Wheel size 19 in. 19 in. 10 in. 10 in. 14 in. 10 in. 10 in. 10 in. Rear Wheel size 12 in. 12 in. 14 in. 14 in. 16 in. 16 in. 19 in. 19 in. Rear Wheel size 18 in. 18 in. 19 inhes 18 in. 19 in. 18 in. 18 in. 19 in. Rear Wheel size 18 in. 10 in. 10 in. 12 in. 14 in. 19 in. 19 in. 10 in. Rear Wheel size 10 in. 14 in. 12 in. 14 in. 19 in. 18 in. 19 in. Rear Wheel size 19 in. 18 in. 19 in. 18 in. Rear Wheel size  
Seat Height 23.8 in. 26 in. 30 in. 21.6 in. 34.1 in. 32.8 in. 38.0 in. 37.7 in. Seat Height 37.7 in. 37.6 in. 37.9 in. 985 mm 985 mm 29.9 in. 34.1 in. 34.3 in. Seat Height 37.6 in. 38.0 in. 23.82 in. 26.57 in. 28.7 in. 22 in. 23.9 in. 26.93 in. Seat Height 28.54 in. 28.54 in. 35.06 in. 33.27 in. 35.43 in. 35.43 in. 38.78 in. 38.78 in. Seat Height 38.78 in. 38.78 in. 38.78 in. 38.78 in. 38.78 in. 38.78 in. 38.78 in. 38.78 in. Seat Height 38.78 in. 24 in. 28 in. 31 in 33.5 in. 37.6 in. 37.6 in. 21.9 in. Seat Height 19.1 in. 34 24.6 30.5 39.3 34.2 in. 39.1 in. Seat Height 38.8 36.6 38.9 38.6 Seat Height  
Class 1 Stock 4-6 YES NO   NO         Class 1 Stock 4-6                 Class 1 Stock 4-6     Yes No   Yes Yes No Class 1 Stock 4-6                 Class 1 Stock 4-6                 Class 1 Stock 4-6   Yes No         YES Class 1 Stock 4-6 YES             Class 1 Stock 4-6         Class 1 Stock 4-6  
Class 2 Stock 7-8 YES YES   NO         Class 2 Stock 7-8                 Class 2 Stock 7-8     Yes Yes   Yes Yes Yes Class 2 Stock 7-8                 Class 2 Stock 7-8                 Class 2 Stock 7-8   Yes Yes         YES Class 2 Stock 7-8 YES             Class 2 Stock 7-8         Class 2 Stock 7-8  
Class 3 Stock 4-8 (O.I.) NO NO   NO         Class 3 Stock 4-8 (O.I.)                 Class 3 Stock 4-8 (O.I.)     No No   Yes No No Class 3 Stock 4-8 (O.I.)                 Class 3 Stock 4-8 (O.I.)                 Class 3 Stock 4-8 (O.I.)   No No         NO Class 3 Stock 4-8 (O.I.) YES             Class 3 Stock 4-8 (O.I.)         Class 3 Stock 4-8 (O.I.)  
Class 4 Stock 4-8 Single or Multispeed Auto NO NO   YES         Class 4 Stock 4-8 Single or Multispeed Auto                 Class 4 Stock 4-8 Single or Multispeed Auto     No No   Yes No No Class 4 Stock 4-8 Single or Multispeed Auto                 Class 4 Stock 4-8 Single or Multispeed Auto                 Class 4 Stock 4-8 Single or Multispeed Auto   No No         YES Class 4 Stock 4-8 Single or Multispeed Auto YES             Class 4 Stock 4-8 Single or Multispeed Auto         Class 4 Stock 4-8 Single or Multispeed Auto