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Product Description

All Gearworks items are limited stock, Please contact us for availability before placing order.

Gearworks HP10 high pinion thirdmembers have won more off road races than any other high pinion drop out. Our attention to detail, using only the highest quality components and thorough testing has made for a winning combination.  

Each thirdmember is especially set up for your application. Whether it’s a front or rear application we have you covered. With carrier bores in 3.812″, Fitted with  45 spline 30 degree spool (45 Spline 45° Pressure Angle available as well). Gearworks housings are already pre-machined, drilled and tapped for ARB air lockers, should you need to change from a spool at a later date. The 3.812″  utilises massive 9/16″  8740 chrome moly main studs with huge billet chromoly main caps and have 2 load bolts. The tail bearing uses a .812″ tall bearing adding capacity over others housings and is retained by a bolt in retainer plate.  They include a hard anodised 2024 billet Pinion Support with large Timken bearings, a double lip pinion seal with a dust exclusion lip and a billet 1350 yoke with a seal guard welded on.  

Your choice of ratios; 4.57 – 4.86 – 5.14 – 5.43 – 5.83 – 6.20

As these are built to individual specification please call us on +44 (0) 1732 463600 

As there are numerous options in terms of gear type and ratio.

We Ship the built housing mounted to a wooden frame in a plastic shipping crate .

Price listed is the Starting Price - subject to individual specification 

Specifications

Brand
Gearworks
Product Code
GWHPBB4530
Weight
41.5kg

Customer Reviews

Gearworks High Pinion Big Bearing Differential fitted with a 45 Spline 30° PA Spool

Product Code GWHPBB4530

All Gearworks items are limited stock, Please contact us for availability before placing order.

  • Race-Proven Performance – More off-road race wins than any other high pinion dropout.
  • Precision Engineering – Designed with the highest quality components and rigorous testing.
  • Customised for Your Application – Available for front or rear applications.
  • Heavy-Duty Construction – Features massive 9/16" 8740 chromoly main studs and billet chromoly main caps with two load bolts.
  • Spool Options – Comes with a 45 spline 30° spool, with a 45° pressure angle version available.
  • ARB Air Locker Compatibility – Pre-machined, drilled, and tapped for easy conversion from spool to locker.
  • Enhanced Strength & Durability – Includes a .812" tall tail bearing for increased load capacity, secured by a bolt-in retainer plate.
  • Premium Pinion Support – Hard anodised 2024 billet pinion support with large Timken bearings and a double-lip pinion seal with a dust exclusion lip.
  • High-Quality Yoke – Comes with a billet 1350 yoke, featuring a welded-on seal guard.
  • Multiple Gear Ratio Options – Available in 4.57, 4.86, 5.14, 5.43, 5.83, and 6.20 ratios.

See full description below.

As these are built to individual specification please call us on +44 (0) 1732 463600.
We Ship the built housing mounted to a wooden frame in a plastic shipping crate.
Price listed is the Starting Price - subject to individual specification