EMPI 28-Spline Free-Floating Axles for 108mm CV Conversion on Porsche 914, 1970–1976, Pair

The EMPI 16-2211-0 is a pair of 20-1/4 inch, 28-spline 4340 chromoly axles that let a 1970–1976 Porsche 914 run 108mm Porsche CV joints with no adapter plates. EMPI lists it in its chromoly IRS race axle range, where the 28-spline axles take the 930 CV joint on a 31.00mm spline. PMB Performance builds every high-power 914 it does with this setup. The splines are cold-formed and rolled, and the shafts carry a silver zinc plating. EMPI designs them to twist and spring back like a torsion bar under shock load, which protects the transaxle final drive and keeps the shaft from snapping under race loads.

The rest of the conversion comes from the 911. The 108mm GKN/Löbro CV joints come out of a pair of 911 axle assemblies and go onto these 914-length shafts. 911 stub axles fit the 914 rear trailing arm, which uses the same bearings as the early 911, and they carry 5-lug 911 hubs. At the transaxle, 911 drive flanges bolt to the 914 gearbox, which shares the basic 901 design. The axles ship as shafts only, so plan on these parts:

• One pair of 901 332 209 15 final drive flanges (usually sourced used)
• One pair of 901 332 232 00 stub axles for 5-lug 911 hubs (new or used)
• One pair of 911 332 033 08 axle assemblies, for their 108mm CV joints
• Four 901 332 297 00 CV joint gaskets
• Sixteen M10 Schnorr washers and sixteen M10 x 50 CV bolts
• One set of EMPI 16-2262 spiral locks for 930 axles (4 pieces, enough for both axles) and four CV joint grease packs

Technical Details

• Manufacturer: EMPI
• Manufacturer part number: 16-2211-0
• Length: 20-1/4"
• Spline count: 28 (930 CV joint, 31.00mm O.D.)
• Material: 4340 chromoly, cold-formed rolled splines
• Finish: Silver zinc plating
• CV joint retainers: EMPI 16-2262 spiral locks, sold separately as a set of 4
• Sold as: Pair, axles only

Fitment & Compatibility

For 1970–1976 Porsche 914 models being converted to 108mm CV joints, typically alongside 5-lug 911 hubs. EMPI sells this axle for custom applications and notes modifications may be needed on a stock vehicle. Confirm your rear hub and transaxle flange plan before ordering.

Common Questions

Do these come with CV joints?
No. They ship as axles only. The 108mm joints come from a pair of 911 axle assemblies.

Can I use 911 circlips to hold the CV joints on?
No. Use EMPI 16-2262 spiral locks, the multi-turn retaining rings made for 930-series axles. A flat circlip may not seat properly in the 930 axle groove and can work loose under load.

Do I have to go 5-lug to use them?
The conversion uses 911 stub axles made for 5-lug 911 hubs, so plan the hub change together with the axles.