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Jeff Frost,
AFM #996, has been
kind enough to invite me to team up with him in the annual
SMRRC
2-Hour race since 2005 and it's awesome! I dunno why, but this is some of
the most fun I have on a motorcycle.
The specifications and some of the mods are listed below and don't
forget to check out Jeff's sponsors in the "Plugs" section!
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Engine
| Engine Type |
air-cooled, 4-stroke, single |
| Displacement |
124cc |
| Compression Ratio |
10.0:1 |
| Bore and Stroke |
54.0mm x 54.0mm |
| Valve Train |
SOHC; two-valve |
| Lubrication System |
Forced lubrication wet sump |
| Starting System |
Kick |
| Carburetor Type |
20mm Mikuni |
| Transmission Type |
5-speed |
| Clutch Type |
Wet, Multi-disc, Manual, Cable-actuated |
| Final Drive System |
O-ring chain |
| Front / Rear Sprockets |
13 / 54 (3.857) |
| Sparkplug |
NGK CR7HSA |
Suspension/Tires
| Front Tire | 70/100x19 |
| Rear Tire | 90/100x16 |
| Brakes | 220mm Disc / 110mm Drum |
| Forks |
30mm Telescopic fork; 7.1-inch travel |
| Shock |
Shock with adjustable preload; 6.3-inch travel |
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Dimensions
| Overall Length | 74.2 in |
| Overall Width | 31.3 in |
| Overall Height | 42.7 in |
| Seat Height | 31.7 in |
| Wheelbase | 50 in |
| Ground Clearance | 11.6 in |
| Dry Weight | 172 pounds |
Capacities
| Fuel Tank | 1.74 gallons |
| Engine Oil | |
Plugs:
♦ frostconsultingllc.com - Frost Consulting, LLC
"Freelance Computer Support"
♦ zoomzoomtrackdays.com
♦ motonation.com
♦ braking.com
♦ motionpro.com
♦ lockhartphillipsusa.com
♦ suomy-usa.com
♦ motorexusa.com
External Links:
♦ thumpertalk.com - TTR Forum
♦ yamaha-motor.com - Straight form the source.
Mods:
♦ Supermoto Tires: Bridgestone BT45, 18-19psi
♦ Brakes - Do NOT use the HH pads.
♦ 14/54 Gearing
♦ Aftershocks Suspension
♦ BBR Exhaust
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