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1.00 LBS

Product Overview


  • Gradual billet taper design precisely guides the piston into the bore.  Will not damage piston or rings.
  • Adjustable diameter allows one tool to work on all stock and oversize pistons/bores of a particular engine.
  • Convenient tool-less thumb adjuster makes adjustments easy.
  • CNC machined from tempered and anodized aerospace grade alloy.
Works with:
  • Fits engine bores from 90.17mm-93.98mm (3.55"-3.70")
  • Perfect for EJ20 engines (fits all stock and oversize pistons/bores)

Warranty Information

Limited Lifetime Warranty for Company23 Products Company23 warrants to that original retail purchaser (“Purchaser”) who holds title to the vehicle on which the parts are originally installed will, when delivered, substantially conform to the respective written Product description furnished to Purchaser. Products should be free from defects in material and workmanship (excludes cosmetics, coatings, and appearance and applies only to the function of the Product for its intended manner and purpose) for the lifetime of the product. Should a product(s) become defective within such period, purchaser will submit a claim at their cost and return the defective product to Company23 with an accompanying Return Manufacturer Authorization number (RMA) and the sales receipt stating the defects and the circumstances under which the defect occurred in which case Company23 will examine, and upon establishing Purchaser’s validity of claim, at its sole discretion repair the Product(s), exchange the Product(s), or refund the purchase price, which shall fully satisfy and discharge any and all warranty claims. Warranty related inquires should be addressed to the following address: Company23 c/o Warranty Service 8814 Brian Dr., Rothschild, WI 54474 and must have the RMA# on the outside of every box received. This warranty extends only to the Product(s) installed in such vehicle model as specified for the respective Product(s) and does not extend to any Product(s) (i) which has been used or operated inconsistent with its intended use, (ii) has not been properly installed by a qualified licensed auto mechanic experienced in the installation of the Product(s), (iii) installed in a vehicle that has been used for racing or off road use only (Product(s) specifically designated for “off-road“ use may be submitted for warranty claim. Company23 holds sole discretion to warranty claims on those Product(s) limitation above, (iv) which was modified or repaired by anyone other than Company23 personnel, (v) damaged because of misuse, neglect, accident or improper installation or service, (vi) Sold or used outside the United States of America. User of motor vehicles incorporating Company23 products should at all times take necessary precautions against damage to persons or property resulting from malfunction of the products. THE WARRANTIES SET FORTH HEREIN ABOVE ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED. THE SALE IS MADE WITH THE UNDERSTANDING THAT THERE IS NO IMPLIED WARRANTY THAT THE PRODUCTS SHALL BE FIT FOR ANY PARTICULAR PURPOSE. THE PURCHASER ACKNOWLEDGES THAT THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION HEREIN. IN NO EVENT SHALL COMPANY23 BE LIABLE FOR CONSEQUENTIAL, INCIDENTAL, OR SPECIAL DAMAGES, AND DAMAGES ARISING OUT OF THE PURCHASE, UNLOADING, HANDLING AND THE USE OF ANY PRODUCTS, ALL OF WHICH ARE WAIVED BY PURCHASER. IN ANY EVENT, DAMAGES HEREUNDER SHALL BE LIMITED TO A MAXIMUM OF THE PURCHASE PRICE OF THE RESPECTIVE PRODUCT. THIS WARRANTY GIVES THE CONSUMER SPECIFIC LEGAL RIGHTS AND THE CONSUMER MAY ALSO HAVE OTHER RIGHTS, WHICH VARY FROM STATE TO STATE. If you have ANY questions about a product or service, you must contact us prior to installation or use! Company23, 8814 Brian Dr., Rothschild, WI 54474, (715) 203-4161,


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