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    • El Diablo's First Win!
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    • Jason Voss wins Pahrump 250!
    • Jason Voss wins Tonopah 250!
    • Kyle Round 13 Win Champ
    • 13th Round McGrath Champ
    • R12 Win and Champ Luke Johnson
    • Josh Daniel wins Tijuana 150
    • 12th Round MAC Wins
    • 11th Round McGrath Win
    • Kyle Round 12 Win
    • U-11 back in action!
    • Wauria 1 3rd Record!
    • Jessie Jones Wins Midnight Special
    • 10th Round McGrath Win
    • RIP Hardy Allen
    • Jason Voss wins Vegas to Reno
    • Latest Concept with Weismann Axles
    • Hook Cuba Record
    • Wauria 1 Record
    • 6th Round Win with Mac
    • 5th Round Win with Deegan
    • 5th Round Win with Kyle
    • Justin Matney 2nd Baja 500
    • Jason Voss wins Laughlin Classic
    • Pro-2 bans our WeisMatic
    • 1st Round Win with Menzies
    • 1st BITD Championship with Voss
    • Kyle LeDuc 3X Pro-4 Champ
    • Rob Mac Pro-2 Champ
    • Jason Voss wins Blue Water Classic
    • Cody Waggoner wins Utah Trail
    • Cutsinger NHDRO Funnbike Champ
    • Reg Cook's 210.82 Record
    • Kincaid Rules the Big House
    • Menzies' World Record Jump
    • RIP Sam Wheeler
    • 1st Win Voss Motorsports
    • 1st Win Menzies Pro4
    • Texas Mile Record
    • BITD Parker 425 Winner
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  • Contact
  • Home
  • Services
    • Engineering
    • Quality Machining
  • Blog News
    • Horshel wins Baja 1000 2020
    • #1 qualifier 6 Speed FunnyBike
    • BITD SCORE BAN 2 SPEEDS
    • El Diablo wins Championship!
    • El Diablo wins 3&4!
    • Horschel Ultra4 Pole at Moab
    • El Diablo's Second Win!
    • Horschel Crandon 2nd
    • Kyke Crandon 2 wins
    • ULR back to back Crandon Cupup
    • El Diablo's First Win!
    • Hook Bahamas Record
    • Turbinator II Record
    • Jhoni 2X Champion
    • Jason Voss wins Pahrump 250!
    • Jason Voss wins Tonopah 250!
    • Kyle Round 13 Win Champ
    • 13th Round McGrath Champ
    • R12 Win and Champ Luke Johnson
    • Josh Daniel wins Tijuana 150
    • 12th Round MAC Wins
    • 11th Round McGrath Win
    • Kyle Round 12 Win
    • U-11 back in action!
    • Wauria 1 3rd Record!
    • Jessie Jones Wins Midnight Special
    • 10th Round McGrath Win
    • RIP Hardy Allen
    • Jason Voss wins Vegas to Reno
    • Latest Concept with Weismann Axles
    • Hook Cuba Record
    • Wauria 1 Record
    • 6th Round Win with Mac
    • 5th Round Win with Deegan
    • 5th Round Win with Kyle
    • Justin Matney 2nd Baja 500
    • Jason Voss wins Laughlin Classic
    • Pro-2 bans our WeisMatic
    • 1st Round Win with Menzies
    • 1st BITD Championship with Voss
    • Kyle LeDuc 3X Pro-4 Champ
    • Rob Mac Pro-2 Champ
    • Jason Voss wins Blue Water Classic
    • Cody Waggoner wins Utah Trail
    • Cutsinger NHDRO Funnbike Champ
    • Reg Cook's 210.82 Record
    • Kincaid Rules the Big House
    • Menzies' World Record Jump
    • RIP Sam Wheeler
    • 1st Win Voss Motorsports
    • 1st Win Menzies Pro4
    • Texas Mile Record
    • BITD Parker 425 Winner
    • Red Bull Frozen Rush
  • Contact
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Our standard WBT 4WD Transfer Case, that we have been racing in the Pro 4 trucks since 2003, has undergone a series of evolutions to enable new truck configurations, increased ratio range, increased oil sump capacity, increased gear capacity for the desert, a lighter case and covers, a selectable device that can alter the drive to the front wheels, and even a bolt on damper.
​

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The first major change is the location of the rear output drive. It normally lies inline with the output location of the automatic. Recently we made a version that moved the rear output inline with the front output location. The output can be a flange or a yoke.
Picture
Picture
​In both of the versions above, the selectable Weismann Unlocker / Locker is incorporated into the out put to the front. In Unlocker mode, the output to the front drives in the drive direction only. In Locker mode, the output to the front drives in both directions, i.e. you have 4WD in reverse too.
​

Picture
The P4T can come with output flanges to fit CV joints, or end yokes, or for maximum driveshaft length, a 35 spline, 1350 or a 1480 Pinion Yoke. 
​
Picture
The Geiser Bros AWD Trick Truck is based on our P4T Transfer Case. This year, Justin Matney won the first race of the year at the Parker 425, the first time in over 50 years a 4WD truck has won overall.

Click on the picture above or below to see a video about this race truck.

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The P4T is drysumped with an internal sump system, and a built-in mechanical oil pump. Not pictured is a new Damper that we successfully raced last year to a TORC Championship, by saving their weak transmission from gear failures.

Some of the Top racers in Pro 4 and desert racing that used a version of the WBT:
Jason Baldwin, Johnny Greaves, Ricky Johnson, Rob MacCachren, CJ Greaves, Adrian Cenni, Steve Barlow, Mike and Mark Jenkins, Jerry Daughtery , Bryce Menzies, Justin Matney.


Address

1728 Monrovia Ave.
Costa Mesa, Ca. 92627

Telephone

949-645-4064

Email

gearboxes@hotmail.com
Weismann
  • Home
  • Services
    • Engineering
    • Quality Machining
  • Blog News
    • Horshel wins Baja 1000 2020
    • #1 qualifier 6 Speed FunnyBike
    • BITD SCORE BAN 2 SPEEDS
    • El Diablo wins Championship!
    • El Diablo wins 3&4!
    • Horschel Ultra4 Pole at Moab
    • El Diablo's Second Win!
    • Horschel Crandon 2nd
    • Kyke Crandon 2 wins
    • ULR back to back Crandon Cupup
    • El Diablo's First Win!
    • Hook Bahamas Record
    • Turbinator II Record
    • Jhoni 2X Champion
    • Jason Voss wins Pahrump 250!
    • Jason Voss wins Tonopah 250!
    • Kyle Round 13 Win Champ
    • 13th Round McGrath Champ
    • R12 Win and Champ Luke Johnson
    • Josh Daniel wins Tijuana 150
    • 12th Round MAC Wins
    • 11th Round McGrath Win
    • Kyle Round 12 Win
    • U-11 back in action!
    • Wauria 1 3rd Record!
    • Jessie Jones Wins Midnight Special
    • 10th Round McGrath Win
    • RIP Hardy Allen
    • Jason Voss wins Vegas to Reno
    • Latest Concept with Weismann Axles
    • Hook Cuba Record
    • Wauria 1 Record
    • 6th Round Win with Mac
    • 5th Round Win with Deegan
    • 5th Round Win with Kyle
    • Justin Matney 2nd Baja 500
    • Jason Voss wins Laughlin Classic
    • Pro-2 bans our WeisMatic
    • 1st Round Win with Menzies
    • 1st BITD Championship with Voss
    • Kyle LeDuc 3X Pro-4 Champ
    • Rob Mac Pro-2 Champ
    • Jason Voss wins Blue Water Classic
    • Cody Waggoner wins Utah Trail
    • Cutsinger NHDRO Funnbike Champ
    • Reg Cook's 210.82 Record
    • Kincaid Rules the Big House
    • Menzies' World Record Jump
    • RIP Sam Wheeler
    • 1st Win Voss Motorsports
    • 1st Win Menzies Pro4
    • Texas Mile Record
    • BITD Parker 425 Winner
    • Red Bull Frozen Rush
  • Contact
  • Home
  • Services
    • Engineering
    • Quality Machining
  • Blog News
    • Horshel wins Baja 1000 2020
    • #1 qualifier 6 Speed FunnyBike
    • BITD SCORE BAN 2 SPEEDS
    • El Diablo wins Championship!
    • El Diablo wins 3&4!
    • Horschel Ultra4 Pole at Moab
    • El Diablo's Second Win!
    • Horschel Crandon 2nd
    • Kyke Crandon 2 wins
    • ULR back to back Crandon Cupup
    • El Diablo's First Win!
    • Hook Bahamas Record
    • Turbinator II Record
    • Jhoni 2X Champion
    • Jason Voss wins Pahrump 250!
    • Jason Voss wins Tonopah 250!
    • Kyle Round 13 Win Champ
    • 13th Round McGrath Champ
    • R12 Win and Champ Luke Johnson
    • Josh Daniel wins Tijuana 150
    • 12th Round MAC Wins
    • 11th Round McGrath Win
    • Kyle Round 12 Win
    • U-11 back in action!
    • Wauria 1 3rd Record!
    • Jessie Jones Wins Midnight Special
    • 10th Round McGrath Win
    • RIP Hardy Allen
    • Jason Voss wins Vegas to Reno
    • Latest Concept with Weismann Axles
    • Hook Cuba Record
    • Wauria 1 Record
    • 6th Round Win with Mac
    • 5th Round Win with Deegan
    • 5th Round Win with Kyle
    • Justin Matney 2nd Baja 500
    • Jason Voss wins Laughlin Classic
    • Pro-2 bans our WeisMatic
    • 1st Round Win with Menzies
    • 1st BITD Championship with Voss
    • Kyle LeDuc 3X Pro-4 Champ
    • Rob Mac Pro-2 Champ
    • Jason Voss wins Blue Water Classic
    • Cody Waggoner wins Utah Trail
    • Cutsinger NHDRO Funnbike Champ
    • Reg Cook's 210.82 Record
    • Kincaid Rules the Big House
    • Menzies' World Record Jump
    • RIP Sam Wheeler
    • 1st Win Voss Motorsports
    • 1st Win Menzies Pro4
    • Texas Mile Record
    • BITD Parker 425 Winner
    • Red Bull Frozen Rush
  • Contact