Dinan Carbon Fibre Cold Air Intake for BMW G2x M240i M340i M440i
Unlock your BMW’s potential with the Dinan carbon fibre cold air intake, the must‑have performance intake upgrade for the B58‑powered G42 M240i, G20 G21 M340i and G22 G23 M440i. This premium carbon fiber induction kit replaces the restrictive factory air box and resonator to deliver stronger top‑end power, faster throttle response and addictive turbo spool sound, all while elevating your engine bay with a showpiece carbon fibre finish.
Proven performance, incredible sound
- Dyno‑proven gains: up to 9 WHP and 8 lb‑ft of torque at 6500 RPM on a completely stock vehicle
- Outflows the factory intake by 58 percent or more for improved breathing and sharper response
- Semi‑open design and resonator delete amplify induction noise, turbo spool and BOV sounds
- Extensive testing showed the patterned secondary inlets add volume without increasing turbo inlet temperatures
Engineered to breathe
- Large‑volume air box approximately 60 percent larger than stock for maximum airflow
- High‑flow filter with 40 percent more surface area, from 82 in² to 115 in²
- Complete lower box redesign to fully utilise available engine bay space
- Beautiful carbon fibre construction for an OEM+ look under the bonnet
- Quick and easy installation
Real‑world results from Nforcd
We have fitted and driven this Dinan carbon fibre intake on customer BMW M240i, M340i and M440i models, and the feedback is outstanding. Owners love the deeper induction tone, pronounced turbo spool and blow‑off sounds, plus the noticeably crisper throttle response. It transforms the character of the B58 while keeping things refined for daily use.
Fitment and keywords
Compatible with all G2x M240i, M340i and M440i models with or without factory bracing. Ideal search terms: BMW M240i cold air intake, BMW M340i intake, BMW M440i intake, G42 M240i intake, G20 G21 M340i intake, G22 G23 M440i intake, B58 intake, Dinan carbon fibre intake, carbon fiber induction kit, BMW G20 intake upgrade, G42 induction kit, G22 cold air intake, performance air intake for BMW 40i.
Why upgrade from stock
The factory air box is restrictive, muted by an intake resonator and hidden beneath plain bracing. Dinan’s semi‑open intake rights those wrongs with significantly increased airflow, a more engaging soundtrack and a premium motorsport look. More air in means more response and stronger pull across the rev range.
Professional fitting
Want it installed properly the first time? Nforcd offers professional fitting in Warwickshire. Request a quote at Sales@nforcd.com and our team will get you booked in.