Nickies Cylinders 105.029 mm with 12.5:1 JE Piston Set, 911 3.6
The largest bore in the range at 105.029 mm, paired with 12.5:1 forged pistons — a race compression ratio, not a road one.
Engine Internals In production confidence: medium
Manufacturing
| Manufacturer | LN Engineering |
|---|---|
| Origin | 🇺🇸 United States Manufactured here LN Engineering, USA. |
| Process | CNC Machined |
| Additively manufactured | No |
| Material | 6061-T6 Aluminium, Nickel Silicon Carbide plating |
| Notes | 964 and 993 cylinders use the late-style sealing configuration and have no o-ring provision in the case, so sealant is required. Early 964 heads must be updated per the factory bulletin before fitting. |
Published figures
| Basis | Published by the manufacturer; not independently verified. |
|---|---|
| Notes | 12.5:1 compression — requires appropriate fuel and calibration, and is not a bolt-on for a road car. |
Fitment
| 964 | All models |
|---|---|
| 993 | All models |
Sources
- Porsche 911 3.6 105.029mm Nickies inc. 12.5:1 JE Piston set — LN Engineering, accessed 2026-08-17