Manley's NexTek® valve springs are the latest in valve spring technology. The main benefit of the NexTek® springs is that they resist degradation of spring pressure in the later stages of a race. This is critical in oval track racing, where an engines valve train is abused for a long period of time. The spring inside diameter is chamfered for retainer clearance. The state-of-the-art winding process, thermal treatment and finishing practices cannot be duplicated, making these springs unique. The specially processed premium-grade chrome silicon is virtually free of impurities or surface irregularities, making for a high-quality, high-performance valve spring. NexTek® Series valve springs have been tested by leading engine builders and are confirmed to be the best performing valve springs on the market today!

Manufactured from ''super clean'' HiTensile Chrome Silicon steel
Shotpeened to MIL Specs for maximum fatigue life
Proprietary multistep heat treating minimizes load loss
Tightly controlled open end flatness reduces valve stem side loading
Tip thickness designed to eliminate overload breakage
No degradation of spring pressure in the later stages of a race
Specially processed premium-grade chrome silicon that is virtually free of impurities or surface irregularities
NexTek® Series valve springs have been tested by leading engine builders and are confirmed to be the best performing valve springs on the market today

Carb Warning:

FOR RACE/ OFF ROAD USE OR FOR USE ON PRE-1966 VEHICLES.

EMISSIONS WARNING: THIS PART ONLY LEGAL FOR SALE OR USE IN CALIFORNIA FOR RACING (COMPETITION) VEHICLES WHICH MAY NEVER BE USED, REGISTERED, OR LICENSED FOR USE UPON A PUBLIC HIGHWAY, OR IF INSTALLED IN VEHICLES MODEL-YEAR 1965 OR OLDER; MOTORCYCLES MODEL-YEAR 1977 OR OLDER; OR OFF-HIGHWAY RECREATIONAL VEHICLES (SUCH AS OFF-ROAD MOTORCYCLES AND ALL-TERRAIN VEHICLES) MODEL-YEAR 1996 AND OLDER. ANY OTHER USE RENDERS THE VEHICLE TAMPERED AND NOT LEGAL FOR USE ON CALIFORNIA PUBLIC HIGHWAYS (ANY PUBLIC STREET OR ROADWAY, PUBLIC DIRT ROAD, PUBLIC PARK, OR PUBLICLY MAINTAINED RIGHT OF WAY OPEN TO THE USE OF THE PUBLIC FOR VEHICULAR TRAVEL). VIOLATIONS SUBJECT TO $37,500 PENALTY PER VIOLATION PER VEHICLE, REVOCATION OF REGISTRATION, LOSS OF USE ON CALIFORNIA PUBLIC RIGHT OF WAYS, AND PROOF OF CORRECTION FOR TAMPERING. THERE ARE SIMILAR RESTRICTIONS AND PENALTIES UNDER FEDERAL LAW AND THE LAWS OF ALL OTHER STATES WITH PENALTIES UNDER FEDERAL LAW OF UP TO APPROXIMATELY $45,268 PER TAMPERED VEHICLE AND/OR ENGINE.

CA Prop 65

CARB warning

Specifications

KEY SPECS
MFG. Part #	221442-16
Brand	Manley
Valve Spring Style	Dual Spring
Outside Diameter	1.560"
Maximum Lift	.750"
Open Pressure	660 lbs. at 1.25"

GENERAL
Seat Pressure	260 lbs. at 2.00"
Inside Diameter	.812"
Sold in Quantity	Set
GTIN Code	807298023953