Exotek 48P XB4 Center Gear Differential Spur Gear (74T) (Spec Racing)

Exotek 48P XB4 Center Gear Differential Spur Gear (74T) (Spec Racing)
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Price: $13.75
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This is an optional Exotek 48 Pitch, 74 Tooth XB4 Center Gear Differential Spur Gear. This spur gear is ideal for spec racing, such as 13.5t spec racing. For XB4 buggies equipped with the center differential - not slipper!

Allows you to gear higher thanks to the smaller tooth count, allowing you to run bigger pinions without cutting and modifying the stock motor plate.

Includes M2.5 hardware so that it reverse mounts to the spur while allowing the spur teeth to clear the hardware.

Heavy duty machined delrin for precision and durability. 

--IMPORTANT NOTE--

  • Requires modification to the motor mount for proper fit. A countersunk screw must be added to the motor mount to create necessary clearance. See photo below.
  • Not compatible with the slipper set.



Verified Owner
Tuesday, Feb 20 2018 (about 2 years ago)
Exotek 48P XB4 Center Gear Differential Spur Gear (74T) (Spec Racing)
After installing this gear I found the the button motor mount plate hits the spur gear. it will take a bit of work to make this work right

Update after countersinking the motor plate screws it now turns with out hitting anything. But I also cut a small slot so I could move the pinion closer to the motor plate
So it lines up with the spur gear better
Wednesday, May 9 2018 (about 2 years ago)
Exotek 48P XB4 Center Gear Differential Spur Gear (74T) (Spec Racing)
Exotek notes a CSK must be added to the motor plate for proper screw clearance as seen here;
http://cdn2.bigcommerce.com/server1400/5235d/products/771/images/3468/DSC_0071__12350.1525368604.1280.1280.JPG?c=2

Seems to work fine with that note.
Verified Owner
Saturday, Apr 7 2018 (about 2 years ago)
Exotek 48P XB4 Center Gear Differential Spur Gear (74T) (Spec Racing)
Does not fit without major sanding. Hits motor screws. It does not fit the '16, '17 or '18. Don't waste your money. When did they test this before selling it? Very disappointed in EXOTEK for this release.

I have since talked with Exotek who said you need to alter the motor mount so you can use a sunken screw head. Sent me pictures of a Dremeled motor mount plate. Cause that's what you do with $520 kits. And this is something they JUST noticed? Very disappointing.
Verified Owner
Saturday, Mar 17 2018 (about 2 years ago)
Exotek 48P XB4 Center Gear Differential Spur Gear (74T) (Spec Racing)
This gear will NOT fit the 2016 XB4. It hits the motor mount cam screw.