SKU: AD-BV58
Hilborn #58 Rotator Spool will work in a Kinsler Barrel valve Small Blown engines

Factory Hilborn rotator spool replacement

This fits all Hilborn barrel (metering) valves  where a 23-54-57-77-  fits 

For blown engines or very large cubic inch engines.

Blown from 400-600 cu. in.
Unblown from 600-750 cu. in. using some % of nitro

It has a .312" wide ramp

These rotors are for the standard Hilborn metering valve. O-ring included. Choose from:
A - #57 Small motor on GAS 40-100 cu in  or methanol for 1 cyl engines
B - #54 Medium to large motor GAS or ALCOHOL
C - #58 ( #61)  Medium to large motor, moderate to high percentages of NITRO. Slot width:
A = .100"
B = .187"
C = .312"