EMPI Cylinder Shims | Air-Cooled VW 94mm Big Bore | .040" Steel, Set of 4 (21-7440-0)

EMPI Cylinder Shims — .040" Thick Steel | 94mm Big Bore (Set of 4)

These EMPI steel cylinder shims let you dial in deck height on your air-cooled VW engine without machining the pistons. They correct for increases in stroke and compensate when the case has been surface machined, and they are clearanced for standard 8mm studs. Sold in sets of 4.

Vehicle Fitment

• VW Type 1: With 94mm big-bore P&C kit
• Stroker builds: 2110cc and larger

Key Features & Benefits

• Adjust Deck Height: Set deck height without machining the pistons.
• Corrects Stroke Changes: Compensates for increased stroke and for cases that have been surface machined.
• Stud Clearanced: Clearanced for standard 8mm case studs.
• Complete Set: Sold in sets of 4 — one shim per cylinder.

Technical Specifications

• Thickness: .040" / 1.00mm
• Bore Compatibility: 94mm
• Material: Steel
• Sold As: Set of 4
• EMPI Part Number: 21-7440-0

Frequently Asked Questions

• How many shims come in a set? These are sold in sets of 4 — one per cylinder.
• Do I have to machine my pistons to change deck height? No. These shims adjust deck height without machining the pistons.
• Will these clear standard case studs? Yes. They are clearanced for standard 8mm studs.

Explore Related Categories

Building or refreshing an air-cooled VW engine? Browse related parts: Engine Parts, Engine, and All Air-Cooled VW.