* Stock length & head diameter
* Extreme Duty
* High Flow
* one piece forged racing grade stainless steel alloy.
* Liquid nitriding process creates a valve that is smoother and stronger than O.E.M.
* Stems are centerless ground for a longer life
* 45o angle below the lock groove to facilitate the valve seal installation
* Replaces OEM # 18023-87
Head Dia = 1.720″
OAL = 4.480″
Stem Dia = 0.3108″
MFR PART No: AV-1720B
REVELRY PART No: AV-1720B
