Vortek HW97/77 PG4, Image 1
Vortek HW97/77 PG4, Image 1

Vortek HW97/77 PG4 Steel HO Tune Kit

$105.95

Style:Kit and Pistol Seal

Complete Tuning Kit
Kit and Breach Seal
Kit and Pistol Seal
Tuning Kit

Quantity:

1
In Stock
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Shipped & sold by Vortek Products

1-year limited warranty

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Description

HW97_77 PG4-STEEL HO Tune-Kit
NEW Vortek PG4 STEEL HW97 Tune-kit
    
PG4STEEL
Fitting also, HW98, HW77
HW77 smaller compression tube seal size requirements.

Performance with VacSEAL26:
High-Output full power up to 18ft/lbs/26 Joules
*1100fps(.17cal)/290 m/s CP7.9g
*710fps(.22cal)/220m/s G14.33CP (Lead pellet) (16ft/lbs)
*930fps(.22cal)/287 m/s G9.56g (tin pellet) (18.5ft/lbs)


Contents of PG4 Steel Tune Kit: 
PG4 STEEL + 2 DELRIN  INNER GUIDES   
High Yield valve wire power spring
Lubrication for metal, plastic and seals 

Installation:
For Consideration when tuning power:

It is the owner's responsibility to ensure legality of their air gun power output.Vortek's Location of testing is 578 Feet.Above.Sea.Level. (F.A.S.L)For every 1000ft above or below will be approximately .029 difference in velocity, thus foot pound (Ft/lb, Joules) of shooting energy.

1000 F.A.S.L.x .029 = 29fps approx

Joules= .7475=ft/lb

Easy, do-it-yourself with virtually no pre-load force on assembly. 
Works will all HW trigger arrangements 

OPTIONAL PISTON SEAL: 
Special Note for OLDER HW/77 air rifles having smaller compression chambers - your HW77 airgun serial# before 1446049 has an 25mm Compression Tube Bore!! Choose 25mm VacSEAL.
We Highly recommend the install of our VacSEAL25 or 26 with the new PG4 STEEL. 
Though the PG4 STEEL Tune-Kit does not require a change of the OEM piston seal to work... Although testing between OEM and Vortek26 moly seal, we found greater performance when our VacSEAL25 or VacSEAL26 design was inside. Due to the enhanced radial stiffness of the weighted steel PG4, and the damping properties of our VacSEAL design. Upon closer of firing sequence the VacSEAL26 piston geometry did increased performance output dead-blowing sound and movement at the closure of the shot cycle.
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Specifications

Brand
Vortek
Weight
0.5 lbs
Style
Kit and Pistol Seal

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