24-Valve Cylinder Head Kit, M64 (964 / 993)
Retrofit four-valve heads for the M64, with titanium valves and a valvetrain engineered to 12,000 rpm — and 3.5 kg lighter than the parts it replaces.
- Published fitment
- 964 · See fitment notes993 · See fitment notes
- Recorded availability
- In production. Confirm with the supplier.
- Recorded price
- £31,447.50 · Excluding VAT; the webshop shows £37,737.00 including it. Swindon’s marketing site quoted £29,950 when read a day earlier — recorded here as the webshop figure because that is the page you can actually buy from. Past 100 units sold.
Confirmed on the manufacturer’s page. Sources last accessed ; fitment is not independently verified.
Engine InternalsIn productionConfirmed on the manufacturer’s page
Manufacturing
| Manufacturer | Swindon Powertrain |
|---|---|
| Origin | 🇬🇧 United Kingdom Manufactured here Swindon Powertrain, UK. |
| Process | CNC Machined |
| Additively manufactured | No |
| Material | Titanium (grade not disclosed), Aluminium (alloy not disclosed) |
| Notes | Includes titanium inlet and exhaust valves with springs, caps, collets, shims, finger followers and shafts, plus camshafts, cam covers and timing drive input. Engineered to fit a standard engine — original cam drive, lubrication system, crankcase and exhaust all carry over, and it accepts 95–102.7 mm barrels. That retrofit compatibility is the achievement; a four-valve head that needed a new crankcase would be a different engine. |
Published figures
| Basis | Published by the manufacturer; not independently verified. |
|---|---|
| Notes | 3.5 kg lighter than the standard 993 cylinder head set. Flow measured at +40% inlet and +66% exhaust against a standard 993 — which is why it can reach a given output on less boost and less backpressure. Percentage field left at zero because the baseline mass is not published. |
Fitment
| 964 | All models |
|---|---|
| 993 | All models |
Sources
- 24 Valve Cylinder Head Kit For Air Cooled Porsche 911 Engines — Swindon Powertrain, accessed 2026-08-18
- Porsche 911 M64 cylinder head kit passes 100 units sold — Automotive Powertrain Technology International, accessed 2026-08-18