![Dinan Underdrive Pulley Kit | E90 · E92 · E93 M3 | 4.0L V8 [S65] MK2 TT (8J) 3.2L VR6 The use of billet aluminum](https://cdn.shopify.com/s/files/1/0635/0032/1015/files/DinanUnderdrivePulleyKitE90_E92_E93M34.0LV8_S65.png?v=1742081975)
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Ships within 48 hours · Estimated delivery Aug 23 - Aug 28
The use of billet aluminum instead of cast and an increased minimum thickness creates a mount that is dramatically stronger than the cast stock mount
This equates to increases of up to 8bhp
real world power numbers are achieved using our in-house dyno cells to see the effect the improved flow rate has on horsepower and torque
turning on 1st gear downshift without coming to a full stop
Cast aluminum inlet adapter
Dinan Underdrive Pulley Kit | E90 · E92 · E93 M3 | 4.0L V8 [S65] MK2 TT (8J) 3.2L VR6 The use of billet aluminumDinan's underdrive pulley is designed to increase power (11 horsepower 8400 RPM and 7 lb ft torque 8400 RPM on a stock car) by reducing parasitic drag on the engine from spinning the alternator, water pump and AC compressor. This is accomplished by slowing down the speed of these accessory drives that rob power from your engine. Dinan has done extensive hot weather testing so you can be assured that your engine is safe. The Dinan underdrive pulley is
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