Page 787 - 2019-2020 Racecar Engineering Circle Track Parts and Accessories Catalog

Closed Tube Rear Axle Assemblies
“Sprint Center” Quick Change
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tubes, differentials, and gear covers. All 10" dia. ring gear, 12-bolt rears include the Posi-Lock as-
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ing below or a complete breakdown of component parts on the following page.
Part No. Description Included Options Axles Housing Width
Wide 5 Quick Change With 4.86 Ring and Pinion
WINK5270-A4 Aluminum Tube, “Rocket” Rear WIN8106, WIN8133, WIN8137, WIN8140, WIN8186P 32.5"/36" 62"
WINK5270-A6 Aluminum Tube, Standard Dirt/Mastersbilt Rear WIN8106, WIN8133, WIN8137, WIN8140, WIN8186P 33"/35" 61-5/8"
WINK5270-A7 Aluminum Tube, GRT Rear WIN8106, WIN8133, WIN8137, WIN8140, WIN8186P 34"/35" 62-5/8"
WINK5270-LT Less Axle Tubes WIN8106, WIN8133, WIN8137, WIN8186P N/A N/A

WINK5063-60-2K-P
2-1/2" Grand National Quick Change Kits
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tors. Each 10" dia., 12-bolt rear has a magnesium center with 6-rib
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the listing below or consult the complete breakdown of component
parts on the following page.
Part No. Description Included Options Axles Housing Width
WINK5063-60C** Steel Tube, Centered Modified Rear, AFCO/Winters WIN8106, WIN8131, WIN8133, WIN8143 30.5"/30.5" 60"
WINK5063-60-2** Steel Tube, 2" Offset Modified Rear WIN8106, WIN8131, WIN8133 32.5"/28.5" 60"
WIN8106, WIN8131, WIN8133-10-6,
WINK5063-60-2-6** Steel Tube, 2" Offset Modified Rear WIN8155PMHD,WIN8208, WIN8265-156, 32.5"/28.5" 60"
WIN9116
WINK5063-60-2K-P* Steel Tube, 2" Offset Modified Rear WIN8106, WIN8131, WIN8133 32.5"/28.5" 60"
WINK5063-60CK-P* Steel Tube, Centered Modified Rear WIN8106, WIN8131, WIN8133 30.5"/30.5" 60"
WINK5063-62-2K-P* Steel Tube, 2" Offset Modified Rear WIN8106, WIN8131, WIN8133 29.5"/33.5" 62"
* Signifies IMCA-legal. ** Assemblies do not include axles.
OPTIONS FOR “SPRINT CENTER” AND GRAND NATIONAL QUICK-CHANGE
Part No. Description Part No. Description Part No. Description
WIN8100 Gear Cover With Roller Brgs. WIN8136P 4-Rib Lightweight Side Bell WIN8186P 6-Rib Mach. Side Bell
WIN8102 Super Gear Cover With Inspect. Plug With Inspection Plug
WIN8104 Posi-Lock Assembly WIN8137 Heavy Duty Gear Cov er WIN8201 Tube Seal
WIN8106 Heat-Treated Lower Shaft WIN8138 Alum. Tubes With Steel Spindle WIN8202-XXX EDM Ring and Pinion
WIN8111 4.11 Ratio Ring and Pinion WIN8139 8-Bolt Spindles (XXX-Specify Ratio)
WIN8114 Superlight Steel Spool WIN8140 Alum. Side Tubes WIN8208 Thermal Dispersant
WIN8115 Aluminum Spool WIN8143 Roller Brg. On Pinion Nose Coating
WIN8117 Magnesium Side Bells WIN8151 Steel Swedged Wide 5 Tubes WIN8218-RP REM Ring and Pinion
WIN8130 Ultralight Alu mi num Spool WIN8152 Titanium Lower Shaft WIN8244C-CT Differential Bearings,
Low Drag Ceramic
WIN8131 Machined Side Tubes WIN8154 Closed Drive Pinion Bearings,
WIN8132 Alum. 8-Bolt Side Tubes WIN8155P 8-Rib Side Bell With Inspection Plug WIN8244C-P Low Drag Ceramic
WIN8133 “Sprint Center” WIN8155PMHD 8-Rib Bell W/Inspection Plug Differential Bearings,
Super Cover With Pump
WIN8162
WIN8133-10-6 Sprint Center With 6-Bolt Rear Cover WIN8171 Billet Aluminum Locker WIN8244S-CT Low Drag Steel
WIN8136 4-Rib Lightweight Side Bell Pinion Bearings,
WIN8183 “Triple Track” Differential WIN8244S-P
Low Drag Steel
Note: A complete exploded view and breakdown of all component parts can be seen on the following page. WIN8265-156 Tube Option .156" Wall
WIN9116 Pinion Plate Delete

2019-20 CIRCLE TRACK PARTS AND ACCESSORIES 783