Page 537

2016roadiron

537 AV&V Extreme Duty Replacement valves These superb valves are one piece forged from a racing grade stainless steel alloy. Each valve has a bearing quality hardened tip to prevent premature wear with high-lift applications. AV&V Extreme Duty valves also feature a 45° angle below the lock groove to reduce the stress in this area and to facilitate the valve seal installation. Each valve is heat treated with a special process and the stem is centerless grinded to a micro finish for a longer life. valve type diameter Length Stem Diameter Model Year Coating 53-2182 Exhaust 1.355" 4.635” .3106" 883 Sportster (5/16 stem) Black 53-2183 Intake 1.590" 4.550” .3108" 883 Sportster (5/16 stem) Black 53-2016 Exhaust 1.562" 3.510” .3392" 900/1000 Ironhead Sportster Black 53-2017 Intake 1.812" 3.600” .3110" 900 Ironhead Sportster Black 53-2019 Intake 1.940" 3.600” .3110" 1000 Ironhead Sportster Black 53-2167 Exhaust 1.485" 4.560” .3106" 1200 Sportster (5/16 stem) Black 53-2168 Intake 1.720" 4.480” .3108" 1200 Sportster (5/16 stem) Black 53-2021 Int/Exh Exhaust 1.750” 1.750” 3.825" 3.825" .3765” .3765” Panhead Shovelhead 66-84 Black Black 53-2024 Intake 1.940" 3.875” .3770" Shovelhead 66-84 Black 53-2025 Exhaust 1.615" 4.525” .3106" Evolution 1340 84-Up Black 53-2026 Intake Intake 1.845" 1.845" 4.455” 4.455” .3108" .3108" Evolution 1340 Twin Cam up to 2005 (5/16 stem) 84-Up Black 53-2007 Exhaust 1.570" 4.525” .3106" Twin Cam up to 2005 (5/16 stem) Black For 2005 & Up Twin Cam use 7mm triple groove valves on previous page AV&V valve seat inserts These valve seats are made from heat resistant and wear resistant high quality alloy steel and are manufactured with clear convenient identification marking and radius edges for easy installation. These seats will resist intense valve pounding and effectively dissipate heat for consistent valve sealing. These valve seats will increase in hardness during engine break-in-period. See charts below for sizes. valve type Outside diameter Inside diameter Thickness Model Application Oversize Valve Seats for all models (machining required) 53-2039 Exhaust 1.630” 1.180” .385” 53-2029 Exhaust 1.757” 1.410” .430” 53-2279 Exhaust 1.882” 1.530” .410” 53-2030 Intake 2.008” 1.610” .440” 53-2280 Intake 2.040” 1.700” .425” 53-2032 Intake 2.070” 1.610” .460” 53-2034 Intake 2.163” 1.750” .455” 53-2043 Exhaust 1.757” 1.371” .315” Iron Head Sportster 53-2044 Intake 2.068” 1.750” .315” Iron Head Sportster 53-2172 1.820” 1.375” .450” Universal repair seat 53-2045 2.257” 1.550” .500” Universal repair seat Replacement Valve Seats for Shovelheads (no machining required) 53-2027 Exhaust 1.944” 1.570” .400” Shovel Head 1200 & 1340 53-2028 Intake 2.135” 1.750” .400” Shovel Head 1200 & 1340


2016roadiron
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