dragspecialties.com SECTION 7 All part numbers in BLUE are new for 2025. WINDSHIELDS & FAIRINGS AUDIO, COMMUNICATION & MOUNTS SADDLEBAGS & LUGGAGE SEATS & SISSY BARS FUEL/AIR SYSTEMS EXHAUST TRANSMISSION & DRIVELINE ENGINE GASKETS & SEALS LIGHTING ELECTRICAL HANDLEBARS, CONTROLS & MIRRORS CABLES TANKS & OIL FILTERS BRAKES DASHES & GAUGES FENDERS & LICENSE PLATE FRAMES HARDWARE, COVERS & GENERAL FRAMES & SUSPENSION FOOTRESTS & FLOORBOARDS WHEELS & AXLES 771 See OLDBOOK For Early Model Applications DISCLAIMER: *EMIS (EMISSIONS CATEGORIZATION CODE). SEE PAGES 5-7 FOR CATEGORY CODES, IMPORTANT EPA/CARB EMISSION DEFINITIONS AND REGULATORY COMPLIANCE AND NOTICE REGARDING NOISE REGULATIONS. PRODUCTS NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES IF NOT CATEGORIZED AS “1” OR “4”. PART # DESCRIPTION 128” BIG BORE KIT FOR 17-21 114”/117” M-EIGHT (11.7:1 COMPRESSION RATIO) 0910-6405 4.250” kit 0910-6406 +0.005 kit PART # DESCRIPTION 124” BIG BORE KIT FOR 17-21 107” M-EIGHT (11.8:1 COMPRESSION RATIO) 0910-6403 4.250” kit 0910-6404 +0.005 kit PART # DESCRIPTION 124” BIG BORE KIT FOR 17-21 107” M-EIGHT (11.4:1 COMPRESSION RATIO) 0910-6177 4.250” kit 0910-6178 +0.005 kit SUPER-DUTY BIG BORE M-EIGHT PISTON KITS •Updates stock 107”, 114” or 117” motor to 124” or 128” when using 4.250” big bore cylinders •Valve pockets are designed to accept up to +4 mm oversized intake and exhaust valves •Type 3 hard-anodized crown offers corrosion resistance for alcohol-added fuels •Type 3 hard-anodized top ring groove eliminates micro-welding of ring to the groove and gives a hard-flat surface for ring to rotate on •OE-style round wire locks are easily installed •Heavy-duty wrist pins with true 0.9270” diameter to fit rods correctly •Line2Line AST skirt coating starts out with a near-zero wall clearance and through the break-in period hones the cylinders to produce the correct oil wedge, keeping the piston square to the cylinder for best ring seal and quiet operation •Kit includes pistons, rings, pins and locks NOTE: Requires the separate purchase of 4.250” bore cylinders PART #0931-0823. FOR 12-17 103” TWIN CAM AND 07-13 96” TWIN CAM BIG BORE 103” (W/ SCREAMIN’ EAGLE 95CC HEADS) BORE 10:1 COMP. PISTONS (3.875”) 0910-5045 +0.010” 0910-5046 FOR 12-17 103” TWIN CAM AND 07-13 96” TWIN CAM BIG BORE 103” (W/ 85CC HEADS) BORE 11:1 COMP. PISTONS (3.875”) Std. 0910-5044 FOR 07-17 96”-103” TWIN CAM BORED TO 110 CU. IN. (W/ SCREAMIN’ EAGLE 95CC HEADS) BORE 10:1 COMP. PISTONS (4.00”) 0910-5047 +0.010” 0910-5048 FOR 07-17 96”-103” TWIN CAM BORED TO 117 CU. IN. (W/ SCREAMIN’ EAGLE 95CC HEADS) BORE 10:1 COMP. PISTONS (4.125”) 0910-5049 +0.010” 0910-5050 FOR 17-21 114”/117” M-EIGHT BORED TO 120” BORE 11:1 COMP. PISTONS (4.125”) 0910-5724 (+0.020) 0910-5726 SUPER-DUTY FORGED PISTON KITS •New skirt-coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder •Skirt coating eliminates piston rock for the best possible ring seal with no piston slap noise •Hard anodized crown to aid in heat deflection and to reduce corrosion from alcohol fuels •Hard anodized top ring groove eliminates micro welding of the ring to the groove; this maintains a flat and smooth surface for the best ring seal and top ring groove •Includes piston, rings, pins and clips •M-Eight kits have a flat top 1.2cc design with oversized valve pockets to accept 1 mm larger valves •Made in the U.S.A. 0910-5724 0910-6177
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