Product CatalogueSports and OutdoorsWindsurfing OtherBoom AccessoriesChinook Mast Shim Skinny Back Chinook Chinook Mast Shim Skinny Product ID: 535672 Brand: Chinook 2025-05-25 From: $29.99 AUD View or buy the Boom Accessories Windsurfing Other - Chinook Mast Shim Skinny from Chinook to discover other options and shipping details. Description Mast shim for RDM skinny masts. Use your old school SDM boom head on a skinny mast DIMS Overall Length 135mm Indide dim lip to lip 119mm Back to Windsurfing Other - Boom Accessories More Boom Accessories and others in our range Chinook Friction Pad Patrik Boom Clip 39mm Ezzy Boom Shim Goya Boom Shim For RDM Mast Chinook Mast Shim Skinny Patrik Boom Clip 33mm Chinook Pro 1 Replacement Front End Patrik Adjustable Outhaul Trim System (1pc) Radz Hawaii Boom Shim Streamlined Replacement Front End Webbing Strap