Subaru FA25 FB25 Engine Torque / Honing Plate 96mm Max Bore

$260.00 USD

Subaru FA25 FB25 Torque Plate


If you are here, you know what these are for. Most serious engine rebuilder will use one of these plate to hone an engine. This plate recreate the stress a block see when the head is torqued down. It has come to my attention that such a plate is not produced for these motor so I now stock them. They fit stock 11mm and 12mm head bolt, if you plan to use them with 1/2″ head stud please let me know at checkout and I will enlarge the hole in the plate and the spacer. 

These plate will fit on all FA25 and FB25 engine. They can be used on the FA20 and FB20 engine even if the bore is bigger on this plate. 

They are CNC machined out of 2″ thick 6061-T6 aluminum. Stainless steel insert are included so it can be used numerous time without damaging the mounting hole. The spacer also give you the proper height so you can use the stock bolt.

It is suitable for bore up to 96MM for those seeking maximum displacement on these engine, but they obviously can be used on smaller bore too. Bigger bore available on request. I can also make a plate for any motor!


  • A Honing plate
  • 6 Stainless Steel Spacer

These plate will ship to Canada and the United State for a flat rate of 5$!

Need a plate for another motor? Just contact me!

Additional information

Weight 10.5 lbs
Dimensions 10 × 10 × 4 in


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