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This is Spec II's YSR50-specific
page. You will find here all the parts Spec II offers to boost your
YSR50's performance.
Chamber
- Carburator Kits - 60CC Big Bore
Kit - Sprockets - Clutch Kit
- Reeds - Reed Cage Kit -
80CC Conversion Kit - Electronic
Tach - Allen Head Bolts - Front
Fork Springs - Brake Pads - Steering
Damper - Tapered Roller Bearings - Tires
- Stainless Brake Lines - Windscreens
& Stays - Labor
YSR50
POWER CHAMBER
Spec II has what you want
in their expansion chamber : Power and great looks. Just
look at these specifications : up to 30% more horsepower, 5 lb.
weight savings, and 1000more RPM for increased top speed. Our chamber
comes in two models : quiet but with a racy sound, and super quiet
featuring a longer aluminum silencer.
| Part
# 50CB - Standard Silencer |
$139.96
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| Part
# 50CQ - Super Quiet |
$149.99
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MIKUNI
CARBURATOR KITS
After installing Spec II's
expansion chamber, the easiest route to more horsepower is to install
a bigger carburator. We have wored out two truly bolt-on kits. Our
20MM kit works best on 50cc engines, while our 24MM kit is for highly
modified 60cc and all 80cc engines.
These kits come complete
with special manifold, gaskets, air filter, cable, and carburator
of your choice. Detailed instructions also make installation a snap.
Please specify extent
of engine modifications when ordering.
| Part
# 50MS - 20MM Carburator |
$121.80
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| Part
# 50ML - 24MM Carburator |
$128.16
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| Part
# 50MM - Manifold Kit Only |
$39.95
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| Part
# 50MG - Extra Gaskets (2) |
$3.38
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60CC
BIG-BORE KIT
Simply bore-in installation
makes this big-bore kit a breeze to install. Horsepower is improved
at all RPMs making the YSR50 much easier to ride as well as providing
quicker acceleration. Kit includes piston, rings, pin, clips &
gasket.
| Part
# 60BB - 60CC Big Bore |
$69.80
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FRONT
& REAR SPROCKETS
It is necessary to change
the overall gearing in order to take advantage of the increased
horsepower of Spec II's products. In most cases, you will want to
change the front sprocket to a 13.
| Part
# 50FS - Front Sprocket (13, 14, 15) |
$11.99
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| Part
# 50RS - Rear Sprocket (41-43) |
$17.93
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HIGH-PERFORMANCE
CLUTCH KIT
The addition of Spec II's
engine parts causes the stock YSR clutch to slip. Out kit is designed
to handle much more power than a stock YSR50 produces. This results
in more acceleration and top speed from the parts you've just purchased.
| Part
# 50CS - Clutch Springs |
$8.95
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| Part
# 50SC - High-Performance Clutch Kit |
$29.95
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| Part
# 50HC - Heavy-Duty Clutch |
$149.00
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FIBERGLASS
REEDS
Replaces stock reed petals
to boost mid- and top-end horsepower. Also causes less damage to
the engine in case of petal breakage.
| Part
# 50FG - Fiberglass Reeds |
$17.93
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HIGH-FLOW
REED CAGE KIT
Produces more mid-range
and top-end horsepower. Works best with big bore engines. Requies
some machining to fit the barrel.
| Part
# 50RC - High-Flow Reed Cage (Includes Fiberglass Reeds) |
$69.84
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80CC
CONVERSION KIT
This is it! Makes a true
superbike out of your YSR! Kit includes : head, barrel, piston,
rings, special adaptor spacer, carburator and hardware. Kit also
includes a special expansion chamber. Requires boring of the cases.
Includes instructions.
| Part
# 80CV - 80CC Kit |
$156.00
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ELECTRONIC
TACHOMETER
Ever wonder what RPM
your engine is running at? Are you shifting at the best RPM for
best acceleration? Now you can find out with Spec II's electronic
tachometer.
| Part
# 50TM - Electronic Tachometer |
$99.00
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ALLEN
HEAD CASE BOLTS
Add the factory "Works"
look to your YSR50. Also makes it easier to work on your motorcycle.
Complete with wrench.
| Part
# 50AH - Allen Head Case Bolts |
$11.93
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FRONT
FORK SPRING KIT
Front forks feel too
soft? For better control and stability, install our fork springs.
| Part
# 50FS - Fork Springs |
$56.88
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HIGH-FRICTION
BRAKE PADS
Thes pads complete the
YSR50's brake system. Reduce brake lever effort for more controllable
stops.
| Part
# 50BP - Front Brake Pads |
$25.95
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| Part
# 50BS - Rear Brake Shoes |
$11.95
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STEERING
DAMPER
Ever experience handlebar
shake over bumpy roads? Spec II comes to the rescue with our adjustable
steering damper. Featuring a clean bolt-on design. Complete with
instructions.
| Part
# 50SDS - Steering Damper |
$99.00
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TAPERED
ROLLER BEARINGS
Replace weak and rapidly
wearing ball bearings with our tapered roller bearings. Increases
frame rigidity also.
| Part
# 50TR - Tapered Rollers |
$49.50
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RACING
COMPOUND DOT-APPROVED DUNLOP TIRES
Do you ride your YSR
hard? Looking for a lot more security? These racing compound Dunlops
are the answer.
| Part
# 50FT - Front Tire |
$49.50
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| Part
# 50RT - Rear Tire |
$55.00
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STAINLESS
BRAKE LINE
Firms up the front brake
lever. Looks great too!
| Part
# 50BL - Brake Line |
$39.00
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TINTED
WINDSCREENS & FAIRINGS STAYS
Windscreens come in clear,
smoked, and red. Fairing stay stops the fairing from wobbling around.
| Part
# 50FS - Fairing Stay |
$49.79
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| Part
# 50WS - Clear Windscreen |
$39.95
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| Part
# 51WS - Smoke Windscreen |
$39.95
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| Part
# 52WS - Red Windscreen |
$39.95
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LABOR
| Part
# 50LH - Mill Head & Relieve Squish Band |
$25.00
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| Part
# 60LB - Bore & Chamfer for 60CC Kit |
$36.00
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| Part
# 50LF - Lighten Flywheel |
$25.00
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| Part
# 80LC - Bore Cases |
$45.00
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| Part
# 50LE - Split Cases (Only) & Reassemble |
$75.00
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| Part
# 50LX - Completely Split Cases Taking Engine From Bike |
$140.00
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| Part
# 50LT - True and Weld Crank |
$25.00
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| Part
# 50LC - Rebuild Crank & Weld |
$75.00
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| YSR
Stage I Porting |
$75.00
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| YSR
Stage II Porting |
$125.00
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