HEAVY DUTY AXLE UPGRADES:
We install a full range of upgraded half shafts and CV joints for the Range Rover, Discovery, 90/110 and rear shafts only for the Series II, III. The half shafts are all made from a higher grade steel than stock items and all have 24 spline at the diff end. To further improve the strength the splines are "crowned" to reduce transition stress and induction hardened to improve the strength in the spline area. The combination of these three improvements make a considerable improvement to overall strength. Design improvements have removed the stress concentration, which typically caused failure at the diff end, causing the shaft to flex along its length. These shafts have been proven in competition to meet the demands of many winning vehicles. The staff of ECR run these same shafts in our own Rovers, and we have yet to have an axle related failure, and that says a lot considering how much time we spend on the trails.
H.D. Series II, III Rear Half Shafts 24 spline
These shafts are 24 spline on the differential side and 24 spline on the drive flange side as well. If you have 10 spline drive members (as all Land Rovers originally imported to the USA up to 1974 do) they will need to be replaced with upgraded 24 spline type (late Series III) as the shafts are made to fit these later circlip flanges. This set up can cure your broken rear axle issues, and are a must if you plan a locker in your Series Rover.
H.D. Range Rover Rear Half Shafts (thick type) 24 spline
These axles are made to convert the early 10 spline rear axles to a heavy duty 24 spline set up for added strength and longevity.
These shafts are made to fit the thick drive flange (18.5mm), they are 24 spline at the outside end. New drive members may be required which can be supplied if necessary. This set up can cure your broken rear axle issues, and are a must if you plan a locker in your early Range Rover or grey market 90.
AXLE I.D.:
NAS Range Rover rear axle (one piece axle and drive flange) 10 spline differential.
Typically found in early non-ABS Range Rovers.
To run ECR HD rear axles in this application you will need:
1 pair HD rear axles (thick type)
1 pair drive flanges (Part # FRC5806)
1 pair caps (Part # FRC4377)
1 pair circlips (Part # 549473)
and a 24 spline differential or locker of some sort.
H.D. Range Rover, Discovery, Defender 90 Rear Half Shafts (thin type) 24 spline
These shafts are made to fit the "slim" hub driver (15mm) they are 24 spline at the outside end; new drive members may be needed which can be supplied if necessary. They are stronger and made from better materials than the stock units. This set up offers you a very tough rear axle set up, and are strongly suggested if you plan a locker and larger tires.
(In some of these applications we can re-use your original caps, new ones are not needed, see Axle ID below)
AXLE I.D.:
NAS Defender 90 and Disco Series I rear axle (one piece axle and drive
flange)
To run ECR HD rear axles in this application you will need:
1 pair HD rear axles (thin type)
1 pair drive flanges (Part # RUC105200)
1 pair caps (Part # FTC943)
1 pair circlips (Part # 549473)
NAS Range Rover (typically with ABS) rear axles. Two piece drive flange and axle.
To run ECR HD rear axles in this application you will only need:
1 pair HD rear axles (thin type)
and a 24 spline differential or locker of some sort in original 10 spline
cases
Range Rover Front Half Shafts
(early CV joint- 23 spline)
These shafts are made to fit the older 23 spline CV joints, all have the C clip groove in the CV end, when used with older style Range Rover CV will need the bronze adaptor collar installed.
HD Front axle (24 spline diff end, 23 spline CV end) Pair $375.
Range Rover, Discovery, Defender 90/110 Front Half
Shafts
(late CV joint- 32 spline)
These shafts are made to fit the later model 32 spline CV, all have the C clip groove in the CV end. When used with Discovery the bronze location collar adaptor will be needed. They are made from better materials than the stock units to stand up to the stresses of off road uses.
Range Rover, Defender 90/110 1 ton CV joints
The 1 ton CV joint will fit inside your stock swivel ball (all models) and will be one of the toughest things you can run to ward off CV joint failures. It requires a new hub, spindle, drive flange and other pieces, but is one of the strongest set ups available for your Rover. Alloy wheels will not work with the HD drive flanges required. Sadly the 1 ton CV joint can not be used in Rovers with anti-lock brake style CV joints, or in 1997 Defender 90s with the GEMS engine management system.
(NAS Defender 110s can have the HD CVs and 24 spline Axles fitted without the use of other parts)
The good news for 1997 D90 owners is that there are now even tougher versions of these CV joints that are made from better materials and heat treated that will work with the GEMS engine system and do not require new hubs for install!
No matter what your axle needs, we can set your rig up so that trail breakage will be a thing of the past
AXLE I.D.:
This image shows a 1995 NAS Defender 90 converted to 1 ton CV joint and thick drive flanges. This D90 has an ARB front locker, 35x12.50 tires and 40,000 miles of off road abuse and no breakage so far!! Try that on a stock CV joint!
Back to
the Gearing Section
Back to the Table of Contents
East Coast Rover Co.
21 Tolman Road
Warren, ME 04864
email: ecrover@midcoast.com