Raptor 4x4
Indeks: RAP-15631A
Ring & pinions
Rear Ring & Pinion 4.88 (8x39) Toyota Land Cruiser HDJ80 Raptor 4x4
Reinforced 4.88 (8x39) crown wheel and pinion set for the rear axle of the Toyota Land Cruiser HDJ80. The shorter ratio compensates for a larger rolling circumference and puts the engine back in its useful range. The matching front set is RAP-15631.
Rear Ring & Pinion 4.88 (8x39) Toyota Land Cruiser HDJ80 – Raptor 4x4
An 80 Series on oversized rubber can feel oddly flat. There is nothing wrong with the engine — the factory ratio simply stopped matching the rolling circumference. Shorter axle gears put that relationship back where it belongs.
This is a crown wheel and pinion set at 4.88 for the rear axle of the Land Cruiser HDJ80, in a reinforced specification.
RATIO 4.88 (8x39 teeth) | POSITION Rear axle | VEHICLE Toyota HDJ80 |
Key benefits
- 4.88 from an 8x39 tooth count — the engine works in a higher, more useful part of its range, which shows up when pulling away uphill or towing.
- Reinforced specification — the manufacturer lists this pair as a reinforced item rather than a plain replacement.
- Axle-specific — this is the rear set for the HDJ80, not a generic Land Cruiser kit.
Technical data
- Ratio: 4.88
- Tooth count: 8 x 39
- Fitting position: rear axle
- Vehicle: Toyota Land Cruiser HDJ80
- Weight: 8 kg
- Manufacturer: Raptor 4x4 (Saglietti S.r.l.), part number 15631A
Who it is for. HDJ80 owners who have gone up in tyre size and want reasonable performance back, and loaded expedition trucks where the factory ratio starts to hurt on every long climb.
Fitting notes
Both axles must run the same ratio — the matching front set for the HDJ80 is RAP-15631. The job itself means stripping the differential and setting tooth contact pattern and bearing preload, so it belongs with a workshop that does it regularly. Ours does.
Why choose it
- Confirmed 8x39 geometry made specifically for the HDJ80 rear axle.
- Reinforced build rather than a standard replacement part.
- Front and rear sets available in the same 4.88 ratio.
Planning to re-gear both axles at once? Get in touch and we will put the full set together for you.
Frequently Asked Questions
What is the tooth count?
8 on the pinion and 39 on the crown wheel, giving a 4.88 ratio.
Which vehicle and which axle?
The rear axle of the Toyota Land Cruiser HDJ80.
Does the front axle need doing at the same time?
Yes, both axles must share the same ratio. The matching front set is RAP-15631.
How much does the set weigh?
The manufacturer states 8 kg.
