4000 GNAV End Fitting (Stainless) for Bar 507-954 Shop-by-Boat-RS-Classes-RS-Feva and the first rivet is

and the first rivet is 45mm in from the end of the boom face (98mm from the end of the insert you are attaching)

TR90 Frame

there can be differences in the mast step height and hence the current production Solo shrouds and forestays may be too long/short

Strap 1 Allen A

Slot size: 52 x 15mm

4000 GNAV End Fitting (Stainless) for Bar 507-954 Shop-by-Boat-RS-Classes-RS-Feva and the first rivet isSelden GNAV End Fitting 507 954. Used on 4000, RS Vision and RS500 GNAV bar. (The GNAV strut is p n 025 025 10) About: Gnavs (or upside down, reverse thrust vang systems) are becoming very popular for both racing and recreational boats due to the huge gain in cockpit space made by removing the conventional kicker.