890 / 1452
x
X X
X
X
EXHAUST
TIRES
TUBES /
TIRE ACC.
BODY / FRAME
ACCESSORIES
LUGGAGE /
SEATS
COVERS /
SECURITY
WINDSHIELDS
HANDLEBARS /
CONTROLS
LEVERS /
CABLES
FUEL SYSTEMS
AIR FILTERS
OIL FILTERS
ELECTRICAL
LIGHTING /
GAUGES
BATTERIES /
CHARGERS
ENGINE /
CLUTCHES
SUSPENSION /
BEARINGS
CHAINS / BELTS
SPROCKETS
BRAKING
COMPONENTS
CHINESE
VEHICLE PARTS
CHEMICALS
GAS CANS
TOOLS /
HARDWARE
TRANSPORT /
TRAILER
PROMOTIONAL
REFERENCE
INDEX
890
• 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
• 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
Material
Brinell Hardness
Plain Aluminum
6061-T6
95
Mild Steel
1010
116
PBIs aircraft alloy aluminum 7075-T6-51
150
COUNTERSHAFT SPROCKETS
REPLACEMENT COUNTERSHAFT SPROCKET CLIPS
(ACTUAL SIZE)
REAR SPROCKETS
MADE IN THE USA BY THE PROS
FOR THE PROS
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
Small Clip
50-006 $.95
Desc.
WPS # List
Medium Clip
50-007 .95
Desc.
WPS # List
Large Clip
50-008 .95
SPROCKETS