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 21 1218 See FATBOOK For Late Model Applications CYLINDER STUDS •Made of U.S. milled-and-certified aircraft-quality materials •Stud body is the same size as the major diameter of the stud thread, allowing for a stronger stud and stronger body •The complete surface has been ground to remove all the imperfections of standard rough-milled material, which also removes notch sensitivity •Threads are rolled under hydraulic force, creating the strongest possible thread •A radius is ground on the last thread to reduce the potential of the stud failing at that point •Sold in a matched set of eight •Made in the U.S.A. CYLINDER STUD KIT •Superior in strength and performance; designed to exceed needs of high-performance engines •Stock replacement; reusable studs recommended for all V-Twin engines •Precision J-form threads for optimum engagement, to prevent galling and promote more consistent torque loading •Manufactured by ARP® to Feuling’s® exact specifications •Kit includes eight cylinder studs, moly assembly lubricant and thread sealant •Made in the U.S.A. CYLINDER STUD/​HEAD BOLT KIT •Stop head and base gasket failure •Stock replacement; reusable studs and head bolts recommended for all V-Twin engines •Designed to exceed the needs of high-performance engines •Precision J-formed threads prevent galling and promote more consistent torque loading •Studs are made from heat-treated 8740 chromoly; headbolts made from special alloyed stainless steel •Manufactured by ARP® to Feuling’s® exact specifications •Kit includes eight cylinder studs, eight headbolts, assembly lubricant and thread sealant •Made in the U.S.A. REPLACEMENT STUD SETS •Heat-treated for strength and durability •Equal or surpass original equipment •Made in the U.S.A. REPLACEMENT CYLINDER STUD SETS •Heat-treated for strength and durability •Equals or surpasses original equipment •Sold as set of eight EXHAUST T-BOLTS •Measure 5/16” x 1” L •T is 5/8” x 1 1/2” L •Nut with star washer included •Sold in pairs EXHAUST STUDS •Sold in pack of six •Coarse thread (#18) to fine thread (#24) •Made in the U.S.A. PART # DESCRIPTION DS-199771 For 84-99 Evolution Big Twin PART # DESCRIPTION 2401-0203 For 85-99 Evolution Big Twin PART # DESCRIPTION 2401-0129 For 85-99 Evolution Big Twin PART # DESCRIPTION OEM # QUANTITY REPLACEMENT CYLINDER BASE STUDS DS-189955 For 78-84 Big Twin 16837-78 8 DS-189956 For 30-77 Big Twin 16831-30 8 TRANSMISSION END STUDS DS-189924 For 36-84 Big Twin 4-sp. 24818-52 13 TRANSMISSION BOTTOM STUDS DS-189937 For 36-83 4-sp. (std.) (3/8”-16 x 3/8”-24) 34724-36 4 DS-189936 For 36-83 4-sp. (o.s.) (7/16”-14 x 3/8”-24) - 4 DS-189935 For 36-83 4-sp. (o.s.) (1/2”-13 x 3/8”-24) - 4 PART # DESCRIPTION DS-189953 For 85-99 Evolution Big Twin; repl. OEM #16837-85B DS-189954 For 54-85 XL; repl. OEM #16830-72 PART # DESCRIPTION 2404-0649 T-Bolts PART # DESCRIPTION DS-197019 For all 84-99 Evolution Big Twin; repl. OEM #16715-83 DS-189955 DS-189937 DS-189924 DS-189953 DS-189954

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