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      • True Hi9
      • MEGA Hi9
    • Info
      • ARB Airline
      • Bearing, Race & Seal
      • Break-in/REM
      • Cases
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      • Gears
      • Oiling System
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Weivoda Automotive
  • Home
  • Services & Products
    • True Hi9
    • MEGA Hi9
  • Info
    • ARB Airline
    • Bearing, Race & Seal
    • Break-in/REM
    • Cases
    • Driveshaft Comparison
    • Gears
    • Oiling System
    • Pinion Support & Yokes
    • Thrustblock
  • Shop
  • Photos
  • FAQs
  • Contact Us

Mega Hi9

Mega Hi9

The Mega Hi9 is meant for the person that needs more than what a stock sized & materialled 9" can handle. For now we are doing one ratio, it will have a tooth count of 5-27 for a ratio of 5.40. We choose that ratio since most all out comp guys are currently running 5.38's and this will replace those if they need something stronger. It will work nicely with the 5.38 or the normal low pinion 9" ratio of 5.43. The 5.40 tooth count gives a strength advantage over the 5.38 and 5.43 tooth counts.


 Additional Details About The Mega Hi9 


1.    5.40 Ratio  (better ratio strength-wise than 5.38 or 5.43)

2.    35 spline pinion  (even less deflection of the pinion head)

3.    9310 material   (15% stronger than standard 8620 material)

4.    Large radius where the pinion head meets the stem

5.    Longer full complement 17 roller third pinion bearing

6.    Hardened to street use specs

7.    1350 forged yoke included      (or 1410 yoke  +$100.00)

8.    Solid spacer included

9.    Dual load bolts included

10.  Ring gear bolt locks included (except with standard ARBs)

11.  Comp use only (can be daily driven but must run inner axle seals) The MegaHi9s always get filled to the higher oil fill plug level on the case. 


 Mega Hi9 Prices


Mega Hi9 Parts Kit $2199.00

Includes case with caps, adjusters, keepers, gears, wide 3rd bearing, and 2 load bolts.


Complete Mega Hi9 3rd prices

  • $ 3299.00 - 35 spline spool
  • $ 3399.00 - 40 spline spool
  • $ 3599.00 - 35 spline Grizzley (Functions like Detroit but stronger)
  • $ 3699.00 - 35 spline Detroit Locker
  • $ 3799.00 - 35 spline Detroit Tru Trac
  • $ 4499.00 - 35 spline ARB
  • $ 5899.00 - 35 spline competition ARB
  • $ 999.00 - Replacement MEGAHI9 gears
  • $ 525.00 - Mega Hi9 Rear Racing Pinion Support
  • $ 100.00 - Add 1410 billet yoke

Notes:

  • We can convert your standard Hi9 to a Mega Hi9 for $2250.00  


Mega Hi9 Rear Racing Pinion Support


  • With the addition of racing with Mega Hi9s has come a need for a custom pinion support instead of the "off the shelf" units that had worked successfully in rock crawling.
  • We now have a better pinion support with a bigger front bearing and a snap ring for pinion seal retention.
  • The dimensions and oiling system are custom made for the Mega Hi9.
  • All Mega Hi9s will now come with these pinion supports as standard equipment.
  • You can purchase a racing pinion support parts kit to convert your Mega Hi9, the kit comes with the pinion support, both pinion bearings, pinion seal, pinion seal retaining plate, snap ring, o-ring, and solid spacer.



Mega Hi9 Vs. Hi9 Gear Comparison

Mega Hi9 Vs. Hi9 Gear Comparison 

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