Extreme Tractor Parts

Go Big or Go Home

6.125” bore

1.25” pin

4.375 x 0.500” dome

1.700” Compression Height

1/8” Comp Rings, 3/16” Oil Ring

Used on Stock Stroke B &

JD A with Powerblock & Mild Stroke

Some Samples

To contact us call:

919-605-6040

4.625” pistons based on IH 706 LP piston. 

Scanned in the original 4.5” piston and increased the bore to 4.625”

Added dome profile and made LH/RH pistons for DC4 Case.

4.000” Pistons for Massey 44

Scanned the Bondo Head imprint and added dome to boost compression.

Pistons for 1930 Oakland V-8 Flathead car.  Extreme Tractor Parts isn’t just for Tractors anymore!!!

These were made in + 0.020, 0.030 and 0.040

Wrist pins—These are made to NOS specs for JD A, D, and G.  Virtually any wrist pin is possible—oversize or stock.

These “NNS” (New New Stock) for JD A, D or G are $50 each.

JD B Overbore kits for mild pulling tractors

4.875” Pistons for Late JD B’s with stock block — Pistons/pins/rings —$425

4.75” Pistons for Late and Mid JD B’s with stock block — Pistons/pins/rings —$425

 

 

 

Samples of Custom Pistons — These are NEW Forged Pistons, not cobbled up Aircraft pistons.  Make them your way.  Computer designed and manufactured.

Add a 7.25” stroker crank*, camshaft & connecting rods and for under $2200 in parts, you’ve got a 40-50HP** tractor that’s stock appearing.  And you won’t go thru the transmission case.

* Larger strokes available

**Carb and Cylinder Head will determine actual HP