4 GEAR RACE PORTAL

The 74Weld 4 Gear Race Portal is designed to handle 1000+HP big block power plants in today’s winning Ultra4 and Trophy Trucks.

Lead Time: 8 Weeks

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  • 1.63 or 1.45 gear ratio
  • Custom Upright and Suspension Geometry
  • ~5” CV lift on independent applications
  • Spidertrax Pro Series Unit Bearing Integration
  • Every threaded hole features a steel threaded insert
  • Every bolt is drilled for safety wire
  • Every bolt hole features a 17-4 heat treated insert
  • All bearing surfaces are cut post heat treat

The 74Weld 4 Gear Race Portal is designed to handle 1000+HP big block power plants in today’s winning Ultra4 and Trophy Trucks. This is a no corners cut product designed specifically for race applications. We use the best materials available, produce these on high quality Hermle 5 axis machines, and take every extra step that is required to deliver the highest quality race product. This is not a product for your daily driver, but for those that want to push big power, run big tires, and push the AWD/4WD boundaries look no further than this race proven setup! These portals are run by top Ultra4 and Trophy Truck Teams like Brenthel Industries, Geiser Brothers, Jason Scherer, Loren Healy, Vaughn Gittin Jr, Casey Currie and more.

You will need to purchase the rotor and caliper separate as it is not part of the kit. You will also need to provide your own custom length 1480 inner axle shaft.

A set of 4 and is only available for steering applications.

RECOMMENDED CONFIGURATIONS

When it comes to race cars there is no “one size fits all approach” All uprights are custom designed based on your geometry. For this reason every portal is slightly different. When you are ready to order contact us and we will provide you with a “builder model” you will then either design your own upright or have us design it based on your geometry points you provide. We then machine a custom upright designed specifically for you. Please note that you must choose either the 1.45 or 1.63 ratio and once you do you are married to it. You cannot switch ratios without ordering a whole new portal.

CUSTOM BRAKE PACKAGE OPTIONS

• UNIVERSAL PORTAL BOXES ACCEPT CUSTOM CALIPER MOUNTS

• MACHINED, BOLT-ON CALIPER MOUNTS FOR ALCON, BREMBO, WILWOOD, JAMAR AND R1 CONCEPTS

• CALIPER MOUNTS AND ROTOR HATS DESIGNED AND MACHINED TO FIT

1.63 & 1.45 GEAR RATIO OPTIONS

• OPTION OF EITHER 1.45 OR 1.63 GEAR REDUCTION PORTAL

• 4.68” – 4.96” GEAR SPREAD DEPENDING ON RATIO

• BOTH RATIOS DESIGNED, TESTED, AND PROVEN TO WITHSTAND 1000+ HP

CUSTOM UPRIGHT & SUSPENSION DESIGN

• ALL UPRIGHTS ARE DESIGNED SPECIFICALLY TO FIT CUSTOMER SUSPENSION GEOMETRY

• BUILDER FILES ALLOW YOU TO GRAPH SUSPENSION POINTS ONTO A BLANK PORTAL

• USING PROVIDED SUSPENSION POINTS, UPRIGHTS ARE DESIGNED BY CUSTOMER OR BY 74WELD IN COLLABORATION WITH CUSTOMER

SPIDERTRAX UNIT BEARING INTEGRATION

• SPIDERTRAX 56 SPLINE PRO SERIES UNIT BEARING INTEGRATION

• 40 SPLINE UPPER INPUT SHAFT MATES TO 934 CV

• FULL UNIT BEARING SERVICEABLITY WITHOUT HAVING TO SEPARATE PORTAL BOX HALVES

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