* 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 # 18082-57

* Replaces OEM # 18087-81

Head Dia = 1.750in.

OAL = 3.830in.

Stem Dia = 0.3764in.

*“On Line Shopping Only

The post AVV Valve. Exhaust Valve on Big Twin 1948-84 & Intake Valve on Big Twin 1948-1965. OEM Replacement. appeared first on Birds Bitz Motorcycle Parts & Accessories.

* High Performance Spring Kit

* Silicon & Vanadium alloy spring wire

* Increased travel before coil bind

* Complete Kit includes: springs, retainers, keepers & lower collars

* Replaces OEM # 18202-82

* Replaces OEM # 18205-57

* Replaces OEM # 18222-48A

Tech Tips:-

* Rocker box clearance must be checked

* Spring travel must be checked

* Valve timing must be accurate

** Over revving will lead to pre-mature failure of Valve Springs & collars.

*“On Line Shopping Only

The post AVV Valve Spring Kit. Fits Big Twin 1948-1984. .470in. Lift. appeared first on Birds Bitz Motorcycle Parts & Accessories.

* Easy to machine with cutter and stone

* Resists severe pounding and dissipates heat better

* Work-hardens during running-in

* Radiused for easier installation

* Replaces OEM # 18010-79

* Replaces OEM # 18017-66

* Replaces OEM # 18020-79

* Replaces OEM # 18055-66B

OD = 1.944in.

ID = 1.575in.

Thickness = .400in.

*“On Line Shopping Only

The post AVV Exhaust Valve Seat. Fits Big Twin 1966-1984. appeared first on Birds Bitz Motorcycle Parts & Accessories.

* Easy to machine with cutter and stone

* Resists severe pounding and dissipates heat better

* Work-hardens during running-in

* Radiused for easier installation

* Replaces OEM # 18018-66

* Replaces OEM # 18056-66B

OD = 2.135in.

ID = 1.750in.

Thickness = .400in.

*“On Line Shopping Only

The post AVV Intake Valve Seat. Fits Big Twin 1966-1984. appeared first on Birds Bitz Motorcycle Parts & Accessories.

* High Performance Spring Kit

* Silicon & Vanadium alloy spring wire

* Increased travel before coil bind

* Complete Kit includes: springs, retainers, keepers & lower collars

Tech Tips:-

* Rocker box clearance must be checked

* Spring travel must be checked

* Valve timing must be accurate

** Over revving will lead to pre-mature failure of Valve Springs & collars.

*“On Line Shopping Only

The post AVV Valve Spring Kit. Fits Big Twin 1948-1984. .530in. Lift appeared first on Birds Bitz Motorcycle Parts & Accessories.

* High Performance Spring Kit

* Silicon & Vanadium alloy spring wire

* Increased travel before coil bind

* Complete Kit includes: springs, retainers, keepers & lower collars

Tech Tips:-

* Rocker box clearance must be checked

* Spring travel must be checked

* Valve timing must be accurate

** Over revving will lead to pre-mature failure of Valve Springs & collars.

*“On Line Shopping Only

The post AVV Valve Spring Kit. Fits Big Twin 1948-1984. .590in. Lift appeared first on Birds Bitz Motorcycle Parts & Accessories.

* Beehive steel valve spring kit

* Ultra pure chrome silicon+Nickle spring wire

* Extra processing for fatigue resistance

* Resist pressure loss & fatigue associated with extremely aggressive cams in high compression engines

* Reduce vibration & harmonics

* Includes springs,retainers & upper & lower collars

* 162lbs @ 1.860in., 340lbs @ 1.260in.

* Coil bind 1.200in.

* Small end ID = .650in., OD= 1.085in.

* Large end ID = 1.000in., OD = 1.445in.

* CNC machined keepers

Tech Tips:-

* Rocker box clearance must be checked

* Spring travel must be checked

* Valve timing must be accurate

** Over revving will lead to pre-mature failure of Valve Springs & collars.

*“On Line Shopping Only

The post AVV Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003. Beehive Springs with .600in. Lift. appeared first on Birds Bitz Motorcycle Parts & Accessories.

* Steel Double Spring Kit

* Ultra pure chrome silicon+Nickle spring wire

* Extra processing for fatigue resistance

* 1.375in. for better clearance inside rocker cvr

* Springs feature chamfered tops to match smaller retainers

* Includes springs,retainers & upper & lower collars

* 155lbs@1.875, 175lbs@1.815in.

* coil bind 1.080in.

Tech Tips:-

* Rocker box clearance must be checked

* Spring travel must be checked

* Valve timing must be accurate

** Over revving will lead to pre-mature failure of Valve Springs & collars.

*“On Line Shopping Only

The post AVV Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003. Steel Double Springs with .600in. Lift. appeared first on Birds Bitz Motorcycle Parts & Accessories.

* Steel Double Spring Kit

* Ultra pure chrome silicon+Nickle spring wire

* Extra processing for fatigue resistance

* 1.375in. for better clearance inside rocker cvr

* Springs feature chamfered tops to match smaller retainers

* Includes springs,retainers & upper & lower collars

* 185lbs @ 1.860, 460lbs @ 1.160in.

* Coil bind 1.080in.

* Maximum lift = .650in.

Tech Tips:-

* Rocker box clearance must be checked

* Spring travel must be checked

* Valve timing must be accurate

** Over revving will lead to pre-mature failure of Valve Springs & collars.

*“On Line Shopping Only

The post AVV Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003. Steel Double Springs with .650in. Lift. appeared first on Birds Bitz Motorcycle Parts & Accessories.

* Beehive steel valve spring kit

* Ultra pure chrome silicon+Nickle spring wire

* Extra processing for fatigue resistance

* Resist pressure loss & fatigue associated with extremely aggressive cams in high compression engines

* Reduce vibration & harmonics

* Includes springs,retainers & upper & lower collars

* 185lbs@1.860, 370lbs@1.250in.

* coil bind 1.150in.

* Small end ID = .740in., OD= 1.185in.

* Large end ID = 1.055in., OD = 1.500in.

* CNC machined keepers

Tech Tips:-

* Rocker box clearance must be checked

* Spring travel must be checked

* Valve timing must be accurate

** Over revving will lead to pre-mature failure of Valve Springs & collars.

*“On Line Shopping Only

The post AVV Valve Spring Kit. Fits Big Twin 1984-2004, Sportster & Buell 1986-2003. Beehive Springs with .650in. Lift. appeared first on Birds Bitz Motorcycle Parts & Accessories.