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“Winters Performance SR2550STB SR2980 Nostalgia V8 Quickchange, Plain” has been added to your cart. View cart
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Home Car Chassis & Suspension Kits DMI EZIMCA4.12 Saturday Night Special Bulldog Quick Change Axle
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1964-66 Ford Mustang 9 Inch Rear Axle Kit w/Disc E-Brake, 3.50:1
1964-66 Ford Mustang 9 Inch Rear Axle Kit w/Disc E-Brake, 3.50:1 $1,800.00

DMI EZIMCA4.12 Saturday Night Special Bulldog Quick Change Axle

$1,866.00

DMI XR-1, Rear Position, 31 Axle Splines, Natural

  • DMI BullDog CT-1 complete quick change rear axle assembly without tubes, includes 3 quarts of BullDog Blood Gear Oil
  • IMCA legal, high-quality CT-1 quick change rear axle without tubes
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Description

Product Summary

DMI XR-1, Rear Position, 31 Axle Splines, Natural

  • DMI BullDog CT-1 complete quick change rear axle assembly without tubes, includes 3 quarts of BullDog Blood Gear Oil
  • IMCA legal, high-quality CT-1 quick change rear axle without tubes
  • Complete quick change rear without tubes includes 100% magnesium center section & bells, heavy-duty bearings, and aluminum spool
  • The Saturday Night Special is geared towards the no-frills racer and is capable of winning the IMCA Super Nationals
  • Other features include O-ringed rear cover with heavy-duty bearings, magnetic drain plug, and front seal plate

Installation Tips !

  • Side Bell Nuts- 35 ft./lbs.
  • Threaded Ring Gear- 60 ft./lbs. w/ Red threadlocker
  • Pinion Retainer Bolts- 25 ft./lbs.
  • Front Seal Plate Bolts- 35 ft./lbs.
  • Front Yoke Bolt- 35 ft./lbs. with minimum blue threadlocker
  • Pinion Backlash- .004-.008
  • Rotational Pinion Preload (No Spool) – 25 in/lbs. @ 70° F
  • Rotational Pinion Preload (Complete Assembly) – 35 in/lbs. @ 70° F
  • Starting Recommendations for Shims Left- .024″ Right – .055″

Details

BullDog has always tried to make things as easy as possible. When IMCA legalized quick changes they took the opportunity to create two rears to simplify the ordering process, these rears are the same high-quality CT-1 rears – just without tubes. The Saturday Night Special is the rear geared to the no-frills racer, while the Professional Series features the most popular options chosen by racers looking to leave no stone unturned. Either rear is more than capable of winning the IMCA Super Nationals!

This complete quick change rear axle without tubes includes 3 quarts of high-performance BullDog Blood Gear Oil and EZ Bells side bells.

The EZ Series of rears have been overtaking the closed tube rear market over the last three seasons. The innovative time saving design benefits touring professionals and weekly racers alike. The modular concept offers superior strength, unmatched versatility, and simplifies tube replacement.

Superior Strength:

Shallow aluminum side bells increase side bell rigidity by almost 75%! Less flex = more traction. Heavy duty tube collars remain straight and true in the hardest of crashes. Tubes are held to the bell by (6) Grade L9 hardened 7/16″ studs. The EZ system adds 8 lbs to the overall weight of the unit.

“The SRX schedule being six weeks in a row on different style race tracks was a true test of equipment. From the pavement to the dirt DMI passed the test with flying colors.” – Ray Evernham, SRX Series Creator & NASCAR Hall of Fame Member

Unmatched Versatility:

Want to try a different tube? Is a tube swap required to comply with a different sanctioning body’s rule? Loosen the nuts, remove the tube and install the new tube in under ten minutes. The spare tube can be a complete assembly. Brakes, hub, and birdcage can be mounted prior to tube swap. So easy a caveman can do it!

Simple Tube Replacement:

The rear does not even need to be removed from the car. The rear is sealed in the side bell. When the tube assembly is removed it is a dry process. No more fighting with a large bell at the press removing the old tube. Press availability an issue? No problem. Carry a spare tube and collar assembly and get back on track… fast!

Features:

  • 100% magnesium center section & bells
  • O-ringed rear cover w/ heavy-duty bearings
  • Magnetic drain plug
  • Front seal plate
  • Inspection plug & fill level plug
  • Breather assembly
  • Aluminum spool
  • Correct length center hardware
  • Bell to tube hardware
  • -10 AN fitting for fill can
  • Precision ground heat treated lower shaft

KEY SPECS

MFG. Part # EZIMCA4.12
Brand DMI
Position Rear
Axle Splines 31
Axle Type Full Floating
Brakes Included No
Material Type Magnesium
Finish Natural
Gear Ratio 4.12:1
Housing Material Magnesium
Rotors Included No

GENERAL

Axle Shafts Included No
Differential Included Yes
Housing Color Black
Center Section Type Quick Change
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