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2017moto_en

1023 VALVES AV&V Extreme Duty Valves for Off-Road Bikes These superb valves are one piece forged from a racing grade stainless steel alloy. Their profile has been optimized to reduce the weight and to maximize the airflow. This means AV&V’s valves are lighter and are as strong as other aftermarket valves. Our liquid nitriding process creates a valve that is smoother and stronger than traditional O.E.M. or replacement valves. The stems are centerless grinded to a micro finish for a longer life. Important note: If you are changing your OEM titanium valves for AV&V Extreme Duty Steel Valves, you must also upgrade your OEM springs for our Extreme Duty Valve Spring Kits due to the need for higher pressure and toughness. (See valves below with ***) cc Model Year valve type Shank diameter diameter Length Angle Finish Honda 250 CRF250R 04-07 Exhaust 4.97mm 26.00mm 3.234"(82.15mm) 20 Deg. Black 53-2400 Stock size 250 CRF250X 04-12 27.00mm 3.234"(82.15mm) 20 Deg. Black 53-2401 +1.00mm oversize Intake 4.98mm 31.00mm 3.279"(83.30mm) 19 Deg. Black 53-2402 *** Stock size 32.00mm 3.279"(83.30mm) 19 Deg. Black 53-2403 *** +1.00mm oversize 250 CRF250R 08-09 Exhaust 4.47mm 26.00mm 3.234"(82.15mm) 20 Deg. Black 53-2404 *** Stock size Intake 4.98mm 31.00mm 3.279"(83.30mm) 19 Deg. Black 53-2402 *** Stock size 450 CRF450R 02-08 Exhaust 4.97mm 31.00mm 3.321"(84.35mm) 20 Deg. Black 53-2410 Stock size Intake 5.48mm 36.00mm 3.327"(84.50mm) 19 Deg. Black 53-2407 *** Stock size 37.00mm 3.327"(84.50mm) 19 Deg. Black 53-2408 *** +1.00mm oversize 09-12 Exhaust 4.97mm 30.00mm 3.170"(80.52mm) 20 Deg. Black 53-2490 Stock size Intake 5.48mm 36.00mm 3.095"(78.61mm) 19 Deg. Black 53-2492 *** Stock size Kawasaki 250 KX250F 03-12 Exhaust 4.47mm 25.00mm 3.125"(79.38mm) 20 Deg. Black 53-2411 *** Stock size Intake 4.48mm 31.00mm 3.115"(79.12mm) 19 Deg. Black 53-2413 *** Stock size Suzuki 250 RMZ250 03-06 Exhaust 4.47mm 25.00mm 3.125"(79.38mm) 20 Deg. Black 53-2411 *** Stock size Intake 4.48mm 31.00mm 3.115"(79.12mm) 19 Deg. Black 53-2413 *** Stock size 07-12 Exhaust 4.47mm 25.00mm 3.185"(80.90mm) 20 Deg. Black 53-2494 *** Stock size Intake 4.48mm 31.00mm 3.175"(80.64mm) 19 Deg. Black 53-2496 *** Stock size Yamaha 450 YZ450F 10-12 Exhaust 5.47mm 30.00mm 3.290"(83.58mm) 20 Deg. Black 53-2498 *** Stock size Intake 5.48mm 36.00mm 3.385"(85.98mm) 19 Deg. Black 53-2500 *** Stock size


2017moto_en
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