Longfield Chromoly Birfield Joint Kit – Nissan Patrol Y61 (30-Spline / 31-Spline) (300807-KIT)

Strength upgrade for your factory front axle. The Longfield Chromoly Birfield Joint Kit for the Nissan Patrol Y61 (1997–2013) is designed to replace weak OEM CV joints with high-strength chromoly components built for demanding off-road use.

This kit includes a heavy-duty birfield joint only, making it ideal for vehicles retaining factory axle shafts but requiring increased strength and reliability under load.

Why Upgrade Birfields?

• Eliminates common OEM CV joint failure points
• Designed for larger tyres and increased torque loads
• Perfect for off-road, touring and heavy-duty use
• Ideal upgrade without replacing complete axle shafts

Advanced Design Features

• Gun-drilled internal design allows grease to flow directly into internal components
• Integrated M8 grease zerk fitting for easy servicing
• Machined Spline Saver reduces stress at spline transition points
• Precision-polished surfaces reduce stress risers

Material & Construction

• Birfield housing made from forged 4340 chromoly steel
• Internal components made from 4340 chromoly
• Dual heat-treated internals for superior strength
• Designed for high-load and high-angle operation

Technical Specifications

• Inner Star Spline: 30 spline
• Stub Shaft Spline: 31 spline
• Material: 4340 chromoly steel
• Serviceability: Greaseable via zerk fitting

Vehicle Compatibility

• Nissan Patrol Y61 / GR / GU – 1997–2013
• Nissan Safari – 1997–2004
• Nissan Patrol Super Safari – 1997–2013
• All engine variants

What’s Included

• 1 × Chromoly Birfield Joint
• Pre-installed grease fittings

Installation Notes

• Compatible with factory axle shafts
• Professional installation recommended
• Regular greasing is recommended for long-term durability

When Should You Choose This Kit?

• When OEM birfields have failed or worn out
• When upgrading strength without changing axle shafts
• When running larger tyres but retaining stock shafts

FAQs

1) Does this include axle shafts?
No. This kit includes birfield joints only.

2) Are these stronger than OEM?
Yes. Chromoly construction and heat treatment provide significantly higher strength.

3) Can I use these with factory axles?
Yes. They are designed to work with OEM axle shafts.

4) What tyre size are they suitable for?
Suitable for larger tyre setups, depending on overall vehicle configuration.

5) Do they require maintenance?
Yes. Regular greasing via the zerk fitting is recommended.

6) Are they suitable for heavy off-road use?
Yes. They are designed for demanding conditions and aggressive driving.

Need just the individual axle?
Check the Short side or Long side version to complete your axle setup.

Looking for the complete axle kit?
Check the Longfield Complete Axle Kit for Nissan Patrol Y61.