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EXHAUST

TIRES

TUBES

TIRE

ACCESSORIES

BIKE

ACCESSORIES

SNOWBIKE

PITBIKE

GRAPHICS /SEAT

BODY

CONTROLS

BARS /GRIPS

LEVERS

CABLES

INTAKE

FUELSYSTEMS

AIR FILTERS

OIL FILTERS

ELECTRICAL

SPARKPLUGS

BATTERIES

CHARGERS

ENGINE

PISTONS

SUSPENSION

DRIVE

CHAIN

SPROCKETS

BRAKES

CHEMICALS

GASCANS

TOOLS

LOCKS

RAMPS /STRAPS

TRAILERS

PROMOTIONAL

REFERENCE

INDEX

x

X

X

X

X

981

• Manufactured from 7075 T6-51 aluminum

• Stronger than steel sprockets in tensile, yield and shear

strength. (See chart)

• Far lighter than steel for less unsprung weight

• Made from full thickness aluminum for maximum strength

• Available in a full range of tooth sizes

STANDARD

REAR MX

• The finest countershaft sprocket manufactured in the world

• Far exceeds the critical requirements of today's high horsepower bikes

• Manufactured from steel alloy approaching 200,000 psi yield

• CNC machined from high grade alloy steel

• Meets or exceeds OEM specifications

• Heat treated for long life and less wear

• Broached specially for maximum spline to shaft contact

• Available in a full range of tooth sizes

OEM REPLACEMENT

REAR SPROCKETS

Material

Brinell

Hardness

Plain Aluminum

6061-T6

95

Mild Steel

1010

116

PBI’s aircraft alloy aluminum

7075-T6-51

150

COUNTERSHAFT SPROCKETS

REPLACEMENT COUNTERSHAFT SPROCKET CLIPS

(ACTUAL SIZE)

MADE IN THE USA BY THE PROS

FOR THE PROS

Desc.

WPS # List

Small Clip

50-006 $.95

90

80

70

60

50

40

30

20

10

STRONGER THAN STEEL

ENDURANCE

LIMIT

SHEAR

STRESS

YIELD

STRENGTH

TENSILE

STRENGTH

ALUMINUM

ALUMINUM

ALUMINUM

ALUM

STEEL

STEEL

STEEL

STEEL

PBI - PBI - PBI - PBI - PBI

PBI - PBI - PBI - PBI

PBI - PBI -

PBI -

Desc.

WPS # List

Medium Clip

50-007 .95

Desc.

WPS # List

Large Clip

50-008 .95

SPROCKETS