2026-2027 Drag Specialties OldBook

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 dragspecialties.com All part numbers in BLUE are new for the OldBook. SECTION 7 398 See FATBOOK For Late 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 EMIS* 85” KITS FOR 84-99 EVOLUTION BIG TWIN (3 9/16” BORE; 4 1/4” STROKE; 10.3:1 DOME (WITH 86cc HEADS)) 0931-1056 Black w/ highlighted fins 3 85” KITS FOR 84-99 EVOLUTION BIG TWIN (3 9/16” BORE; 4 1/4” STROKE; 9:1 FLAT-TOP (WITH 86cc HEADS)) 0931-1057 Silver 3 0931-1058 Black w/ highlighted fins 3 PART # DESCRIPTION EMIS* 92” KITS FOR 84-99 EVOLUTION BIG TWIN (3 9/16” BORE; 4 5/8” STROKE; 10.3:1 FLAT-TOP (WITH 86cc HEADS)) 0931-1059 Silver 3 0931-1060 Black w/ highlighted fins 3 REPLACEMENT HEAD AND BASE GASKET KIT 0934-7163 For 85”/92” EVO 3 9/16” bore (0.027” head/0.018” base) 3 BOLT-ON BIG BORE KITS •Revolution Performance cylinders are aerospace-grade all-aluminum cylinders with nickel-silicon-carbide (NSC) electroplated bores •NO SLEEVING allows for larger bore sizes •NSC-plated cylinders have less friction for increased horsepower, lower engine temperatures and a longer lifespan •True bolt-on kit that delivers major power durability and strength •Includes a pair of all aluminum NSC-coated bore cylinders, custom-forged piston kit with high-tension rings specifically designed for NSC cylinders and a head/​base gasket set •Replacement gasket sets available separately •Made in the U.S.A. NOTE: For replacement piston kits and single ring sets, see Revolution Performance Big Bore Piston Kits on page 404. PART # DESCRIPTION EMIS* 100” KITS FOR 84-99 EVOLUTION BIG TWIN (3 7/8” BORE; 4 1/4” STROKE; 9.5:1 W/ 86cc HEADS) 0931-1061 Natural 3 0931-1062 Black w/ highlighted fins 3 PART # DESCRIPTION EMIS* 109” KITS FOR 84-99 EVOLUTION BIG TWIN (3 7/8” BORE; 4 5/8” STROKE; 10.1 W/ 86cc HEADS) 0931-1063 Natural 3 0931-1064 Black w/ highlighted fins 3 REPLACEMENT HEAD AND BASE GASKET KIT 0934-7164 For 100”/​109” EVO 3 7/8” bore (0.030” head/0.020” base) N/A MONSTER BIG BORE KITS •Revolution Performance cylinders are aerospace-grade all-aluminum cylinders with nickel-silicon-carbide (NSC) electroplated bores •NO SLEEVING allows for larger bore sizes •NSC-plated cylinders have less friction for increased horsepower, lower engine temperatures and a longer lifespan •Maximizes cubic inches for increased power output with added durability and strength •Requires case boring, which is not recommended on OEM cases 95-earlier; some kits also require a 4 5/8” stroke crank •Includes pair of all aluminum NSC-coated bore cylinders, custom forged piston kit with high-tension rings specifically designed for NSC cylinders and a head/​base gasket set •Upgraded cylinder studs and head bolts recommended •Replacement gasket sets available separately •Made in the U.S.A. NOTE: For replacement pistons and rings, see Revolution Performance Monster Big Bore Piston Kits on page 404. 0931-1056 0931-1059 0931-1061 0931-1064

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