Upgrade from steel to aluminum flywheel $49.00 Upgrade from steel to aluminum flywheel quantity Add to cart SKU: SB53AM8.5-3 Category: Specialty Fits: BMW 1M (2011 - 2011) BMW 435i (2013 - 2017) Description Additional information Description 13 lb weight reduction over the twin with steel flywheel Additional information Weight 3 lbs