The BMW Z4 M40i has all the time been greater than only a fairly face. With its traditional roadster proportions, a silky inline-six beneath the hood, and rear-wheel-drive dynamics, it gives one of many purest open-air driving experiences within the BMW lineup. However for many who crave much more pleasure, Swiss tuning agency dAHLer Competitors Line has one thing particular: the “DCL dAHLer Competitors Line” improve—a full-blown transformation of the G29 Z4 M40i that brings extra energy, sharper dynamics, and unmistakable type.
Energy Now Up To 455 HP
In inventory kind, the European-spec BMW Z4 M40i already packs a punch. Its 3.0-liter B58 inline-six engine delivers 340 horsepower and 500 Nm of torque, promising sturdy acceleration and that signature BMW six-cylinder smoothness. However dAHLer’s upgrades rewrite the spec sheet fully.
Three efficiency levels can be found, all with full EU and Swiss homologation and compliant with Euro 6d-Temp emissions requirements:
- Stage 1: 408 hp and 610 Nm
- Stage 2: 430 hp and 630 Nm
- Stage 3: 455 hp and 650 Nm
Past the numbers, there’s extra freedom too: automobiles constructed earlier than June 2020 get their top-speed limiter eliminated in Levels 1 and a pair of, whereas Stage 3 eliminates the Vmax restriction on all manufacturing years. Which means the Z4 M40i can lastly stretch its legs to its full potential.
Respiratory Simpler, Sounding Meaner
To enhance the facility will increase, dAHLer gives a collection of supporting {hardware} upgrades. A high-performance sports activities air filter and optionally available carbon fiber consumption assist the B58 breathe extra freely. On the rear, a customized stainless-steel exhaust system “constructed by dAHLer” gives twin ceramic-coated ideas—both 90 mm or 100 mm in diameter—and out there bi-valve management, permitting the exhaust word to be tailor-made to the motive force’s temper.
Decrease, Sharper, Quicker
Efficiency isn’t nearly horsepower so this Competitors Line package deal additionally contains tailor-made suspension upgrades. The only possibility contains reducing springs, dropping the journey top by 25 mm on the entrance and 20 mm on the rear for a extra planted stance. For these searching for full management, an optionally available efficiency coilover suspension permits each journey top and damping to be fine-tuned.
Wheels That Full the Image
Visually, the dAHLer Z4 M40i makes a robust first impression. The tuner’s cast alloy wheels—significantly the dynamic CDC2 design—are tailor-made to BMW M automobiles and the Z4’s aggressive aesthetic. The CDC1 wheels are additionally out there in cast or solid kinds, with the solid variant providing the identical 21-inch fitment for an excellent bolder look. Consumers can go for:
- 20-inch setup: 9×20 (entrance) / 10×20 (rear)
- 21-inch setup: 9.5×21 (entrance) / 10.5×21 (rear)
To spherical out the transformation, dAHLer provides a collection of motorsport-inspired visible touches—every crafted in light-weight carbon fiber. There’s a entrance spoiler lip, M-style mirror caps, and rear decklid spoiler. Each bit may be left in pure carbon end or painted to match the physique shade for a completely built-in look.
