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Sonnax Super Servo 2nd

Sonnax Super Servo 2nd

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Availability: In stock

$89.95

Quick Overview

SONNAX BILLET 2ND SUPER SERVO KIT A727, 618, 47RH, 47RE, 48RE SONNAX 22301B-01K

Details

This Sonnax 2nd gear servo offers 16% more apply area than the OE servo and is the largest
and most leak-free servo available. The small and large diameters of both the piston and cover
have improved sealing which eliminates cross leaks and results in 15% less leakage than other
designs. Less leakage means there is more pump volume available for the converter and to
maintain line pressure.
The rubber and PTFE seals enhance positive sealing and prevent piston contact and bore
scuffing. The smaller diameter apply pin gives more area to the release side of the servo where
direct clutch oil pushes the servo off during the 2-3 shift. This increased area balances against
the greater 2nd apply area to maintain a favorable apply-to-release area ratio and minimize
shift overlap on the 2-3 shift. The overall result is more holding force in 2nd, firmer 1-2 and
2-3 shifts that become firmer under load.
For higher horsepower applications, this servo reduces the need for aggressive lever ratios,
excessively high line pressure and other more radical modifications in order to get firmer shifts.

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