Extreme Tractor Parts

Go Big or Go Home

Price Without Pistons — $2850

Part Number:  EB575B

Extreme Blocks are NEW blocks, not worked over 60 year old castings. 

Text Box: 5.75” JD B Extreme Block.   Specify Tractor model year.  Specify JD B or JD 50 Cylinder head pattern.  Crankcase modifications required.  Click on link to view changes.

Product List

To contact us call:

919-605-6040

With Pistons/Pins/Rings — $3250

    

Pistons can also be custom made to your specifications: 

Click here for some samples

Click here to request a quote.  Please include the following:

Your Name

Phone Number

Qty of Pistons

Compression Height

Pin Diameter

Any Special information (Domes, Flat Top, Offset Dome, Slipper Skirt or round)

 

 

 

(2) 5.75” Pistons/Pins/Rings — $600

Part Number:  SSP575B

5.75” Pistons designed for 5.75” JD B Extreme Block with offset which matches offset in cylinder.  Slipper Skirt Design eliminates interference with cam gear.  Eliminates interference with tappet housing as well.  Pistons can also be used in applications such as Straight bore A @5.75”.

6.125” Pistons designed for JD A/60 with + 0.125” PowerBlock. 

7/8” from top of piston to top ring land.  Can be made with up to a 5/8” tall dome to tuck into the top of Powerblock and increase compression.  For use with Stock stroke or stroker motors.

(2) 6.125” Pistons/Pins/Rings — $600

Part Number:  FRP612A

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

 

 

 

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