dragspecialties.com All part numbers in BLUE are new for 2025. SECTION 7 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 776 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”. POWERSPORTS ULTRA SERIES PISTON KITS •In-house forging has allowed JE to develop proprietary Aligned Grain Flow Technology forging technology that directs the grain flow of the aluminum to flow around critical areas of the piston, increasing strength •Lateral gas ports channel combustion gases to the back of the top ring groove, which adds pressure behind the compression ring to keep it pushed against the cylinder, providing improved and more consistent ring seal, critical in boosted applications •Ultra-thick ring lands aid in maintaining ring stability in forced induction and high-horsepower N/A engines, contributing to consistent ring seal and consistent power •Thermal Barrier Crown Coating – a ceramic coating on the piston crown – greatly reduces heat transfer into the piston material, decreasing fatigue and improving longevity •Tuff Skirt – a proprietary, moly-based dry film skirt coating is applied in-house and reduces operating friction for better wear resistance •Accumulator groove provides additional volume to trap unwanted gases below the top ring to keep pressure low and ring seal and performance high •Double pin oilers – two oil channels feed into the pin bore to maintain proper lubrication to improve wrist pin and pin bore wear resistance •Includes upgraded 9310 wrist pins: stronger, thicker wrist pin material is designed to withstand additional loads of forced induction applications •Sold as a complete kit with all necessary pistons, rings, wrist pins and wire locks under one part number PISTON KITS •From Daytona to Bonneville, JE Pistons continues to set the standards in piston design •JE has recorded wins at Daytona, low ETs on the drag strip and land speed records at Bonneville •Machined from 2618-T6 high-tensile forged aluminum •Dome/dish features smooth flowing radii; require no deburring or preparation •JE designs are specifically engineered for extreme applications including professional competition •Kit includes pistons, rings, piston pins and circlips •Made in the U.S.A. PART # BORE COMPRESSION RATIO FOR 17-24 M-EIGHT 114”/1 17” (4.5” STROKE) 0910-6856 4.25” 10.25:1 0910-6859 4.25” 11.25:1 0910-6860 4.31” 11.25:1 PART # BORE COMPRESSION RATIO FOR 17-24 M-EIGHT 114”/117” (4.5” STROKE) (CONT) 0910-6857 4.31” 10.25:1 0910-6858 4.32” 10.25:1 0910-6861 4.32” 11.25:1 PART # DISPLACEMENT BORE SIZE COMPRESSION RATIO WEIGHT (GRAMS) SKIRT FOR 07-17 TWIN CAM 96”/103” BORED TO 107” (DOES NOT FIT LIQUID-COOLED HEADS) 0910-5927 107 cu. in. 3.937” STD 10.25:1 350 Round 0910-5928 107 cu. in. 3.937” STD 10.75:1 355 Round FOR 99-17 TWIN CAM 88”/96” BORED TO 98” 0910-5936 98 cu. in. 3.937 STD 9.5:1 385 FSR 0910-5937 98 cu. in. 3.937 STD 10.5:1 403 FSR FOR 99-06 TWIN CAM 88” BORED TO 95” 0910-5935 95 cu. in. 3.875” STD 10.5:1 401 FSR PART # DISPLACEMENT BORE SIZE COMPRESSION RATIO FOR 17-24 M-EIGHT 107” (4.375” STROKE) 0910-6007 107 cu. in. 3.937” STD. 11:1 0910-6008 114 cu. in. 4.08” +0.143 11:1 0910-6009 117 cu. in. 4.125” +0.188 11:1 0910-6010 124 cu. in. 4.25” +0.313 11:1 FOR 17-24 M-EIGHT 114”/1 17” (4.5” STROKE) 0910-6011 114 cu. in. 4.016” STD. 11:1 PART # DISPLACEMENT BORE SIZE COMPRESSION RATIO FOR 17-24 M-EIGHT 114”/117” (4.5” STROKE) (CONT) 0910-6012 114 cu. in. 4.020” +0.005 11:1 0910-6013 117 cu. in. 4.075” STD. 11:1 0910-6014 118 cu. in. 4.080” +0.005 11:1 0910-6015 120 cu. in. 4.125” +0.05 11:1 0910-6016 128 cu. in. 4.250” +0.175 11:1
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