![Dinan Supplemental Ride Quality & Handling Kit | F30 · F31 · F34 330i · 340i · F32 · F33 · F36 428i · 430i · 435i E60 · E61 525i 2.5L I6 [M54] The IE ultimate girdle kit](https://cdn.shopify.com/s/files/1/0635/0032/1015/files/DinanSupplementalRideQuality_HandlingKitF30_F31_F34330i_340i_F32_F33_F36428i_430i_435i.png?v=1742584142)
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Ships within 48 hours · Estimated delivery Sep 17 - Sep 22
The IE ultimate girdle kit will help protect your race engine from severe main bearing wear or even a broken crank
130% increase in frontal surface area over stock
Recommended for experienced drivers or track days when using the original front anti-roll bar
Carbon fiber allows our engineers to create complex shapes and angles to maximize internal volume while maintaining high resistance to heat
Dinan Supplemental Ride Quality & Handling Kit | F30 · F31 · F34 330i · 340i · F32 · F33 · F36 428i · 430i · 435i E60 · E61 525i 2.5L I6 [M54] The IE ultimate girdle kitTo fully enjoy Dinan performance spring sets we highly recommend pairing them up with our supplemental ride quality and handling kits. This additional kit includes tuned, progressive rate bump stops that maximize suspension travel on the lowered car for improved handling capabilities and ride quality when compared to just a spring set. By allowing for full compression travel within the spring the possibility of a sudden "bottoming out" is negated a
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