Product CatalogueSports and OutdoorsWindsurfing OtherBoom AccessoriesChinook Mast Shim Skinny Back Chinook Chinook Mast Shim Skinny Product ID: 535672 Brand: Chinook 2025-08-10 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 Double Sail Pulley Chinook Friction Pad Chinook In Flight Clew Kit Goya EVA Boom Grip Set 150:200 Chinook EVA Boom Grip Set Black Patrik Boom Backend Wave Cleat Patrik Boom Clip 33mm Chinook Pro 1 Replacement Front End Lisa Windsurfing Boom Grip Kit Goya Replacement Boom Front End