{"product_id":"estrattore-ruota-libera-park-tool-fr-4","title":"PARK TOOL FREEWHEEL REMOVER FR-4","description":"\u003csection\u003e\n\u003cp\u003eMany European freewheels of past decades, from Regina to Atom, use a 20-spline fitting that no modern cassette tool can grip. The \u003cstrong\u003ePark Tool FR-4\u003c\/strong\u003e was made for exactly this: it is the Park Tool FR-4 freewheel remover for 20-spline fittings, essential for anyone working on vintage road bikes, city bikes and classic hubs.\u003c\/p\u003e\n\u003cp\u003eThe body is heat-treated alloy tool steel and the fitting, with an outer diameter of about 21.6 mm, engages all 20 splines, spreading the torque evenly and avoiding rounding off profiles that are often already worn. The 1 inch hex base lets you work with an adjustable wrench, socket or bench vise, choosing the option with the most leverage depending on how stubborn the freewheel is.\u003c\/p\u003e\n\u003ch2\u003ePark Tool FR-4 freewheel remover compatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAtom and Regina freewheels with 20-spline fitting.\u003c\/li\u003e\n\u003cli\u003eSplined Zeus freewheels.\u003c\/li\u003e\n\u003cli\u003eSome Schwinn-approved freewheels.\u003c\/li\u003e\n\u003cli\u003eOlder SunTour freewheels with 20-spline fitting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy choose Park Tool FR-4\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCovers the main European 20-spline standards with one tool.\u003c\/li\u003e\n\u003cli\u003eHeat-treated alloy tool steel built to free very tight freewheels.\u003c\/li\u003e\n\u003cli\u003eFull-spline engagement to protect the freewheel fitting.\u003c\/li\u003e\n\u003cli\u003e1 inch hex for wrench, socket or vise.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBefore starting, secure the tool with the quick-release or axle nut so it cannot pop out of the fitting under load. For restoring and servicing freewheel drivetrains, the \u003cstrong\u003ePark Tool FR-4 freewheel remover\u003c\/strong\u003e is a reliable reference in any workshop.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003ch3\u003eTECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eGeneral\u003c\/strong\u003e\u003c\/summary\u003e\u003cul\u003e\u003cli\u003e\u003cstrong\u003eItem code\u003c\/strong\u003e: FR-4\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eType\u003c\/strong\u003e: 20-spline freewheel remover\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eDrive\u003c\/strong\u003e: 1 inch hex\u003c\/li\u003e\u003c\/ul\u003e\u003c\/details\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eMaterials\u003c\/strong\u003e\u003c\/summary\u003e\u003cul\u003e\u003cli\u003eHeat-treated alloy tool steel\u003c\/li\u003e\u003c\/ul\u003e\u003c\/details\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/summary\u003e\u003cul\u003e\u003cli\u003e\u003cstrong\u003eSplines\u003c\/strong\u003e: 20\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eFitting outer diameter\u003c\/strong\u003e: approx. 21.6 mm\u003c\/li\u003e\u003c\/ul\u003e\u003c\/details\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/summary\u003e\u003cul\u003e\u003cli\u003eAtom, Regina, splined Zeus\u003c\/li\u003e\u003cli\u003eSome Schwinn-approved freewheels\u003c\/li\u003e\u003cli\u003eOlder SunTour 20-spline freewheels\u003c\/li\u003e\u003c\/ul\u003e\u003c\/details\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Park Tool","offers":[{"title":"Default Title","offer_id":58244857725268,"sku":"PKFR4","price":10.8,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/5223\/4068\/files\/f7b2b6731bf4d6b90959e917a4c5b5cb9c6e6e1f26cc7ff1da67363ff211bc80.png?v=1794312141","url":"https:\/\/www.pro-mstore.com\/en\/products\/park-tool-fr-4-freewheel-remover","provider":"Pro-M SRL","version":"1.0","type":"link"}