do88 Aluminum Charge Pipe Kit - B58TU

do88 calls the Gen 2 B58 charge pipe fragile, even on stock cars used on track. Its kit replaces it with mandrel-bent, powder-coated pipes joined by a flexible silicone hose that takes up heat expansion, so the clamps don't have to be cranked down hard enough to deform the pipe ends. do88 measured 558 CFM at 150 mbar against 439 CFM for the factory pipe, about 27% more flow.

What you get

• Two mandrel-bent black pipes, 60 mm on the lower section and 76 mm on the upper.
• CNC-machined 6063 aluminum ends with 3 mm walls at the hose connections and the throttle body flange, plus a machined MAP sensor boss.
• Three-hump reducing silicone hose reinforced with high-temperature aramid fabric and stainless outer rings.
• Two 1/8 NPT ports for methanol injection or a boost sensor, with plugs if you don't use them.
• Mikalor clamps with inner rings, plus all the mounting hardware and instructions.

Good to know

• Space between the throttle body and the slam panel is tight. do88 says the slam panel edge may need a few millimeters ground off.
• do88 lists this kit for the BMW G-series. The GR Supra and Z4 use a separate do88 kit.

Brand: do88 · Part #: TR-390-GX

• Ships from the brand or distributor, usually in 3–7 business days.
• Shipping is charged at the carrier's rate, shown at checkout. Orders over 70 lb ship by freight for a flat $99.
• Unused parts can be returned within 30 days. Some items are marked no-refund in their description.

Full details are on our shipping and returns page.