Home / Products by Brand / AutoSpecialists / Auto Specialists All Products / AIRTEC Motorsport Dump Valve Symposer Bung AIRTEC Motorsport Dump Valve Symposer Bung £11.95 £9.96 (ex. VAT) £0.00 Size required: 33mm 25mm Product Code: ATMSFO66 Add to your Wish List You will earn 11 points with this purchase Info Reviews Fits: Focus MK2 RS & ST AIRTEC Motorsport dump valve symposer bung. Finished in aluminium Not yet reviewed Write an online review and share your thoughts with other shoppers! Be the first to review this product. Tab 4 content. Tab 5 content.