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Single mass flywheel BMW B58 B58B30 - 240mm / 9.45" - 6,34kg / 13,98lb
- Boost throttle response for BMW F20 F21 F22 F23 F30 F32 F36 M140 M240 340i 340ix 440i 440ix B58B30. PMC Motorsport lightweight 6,34kg billet flywheel. CNC machined, worldwide shipping.
PMC Motorsport Lightweight Billet Flywheel (SMF) - BMW F20 F21 F22 F23 F30 F32 F36 M140 M240 340i 340ix 440i 440ix B58B30 - [B58 / 240mm / 6,34kg]
Upgrade your engine performance with the PMC Motorsport lightweight rigid flywheel for BMW B58 B58B30 engines. Precision-engineered using CNC-machined aluminum, this flywheel features a replaceable steel friction plate for extended durability. All mounting points are 100% compatible with the original OE flywheel for a perfect bolt-on fit.
Why choose a lightweight flywheel? Reducing the rotational mass (inertia) leads to significantly faster throttle response and improved vehicle acceleration. While it doesn't increase raw engine power, it minimizes drivetrain losses, delivering more power directly to the wheels. This is an essential upgrade for track days and racing, allowing the car to recover speed much quicker coming out of corners.
European Quality: Our entire R&D and production facility is located in Poland. Over 90% of our components are manufactured in-house to ensure the highest standards.
Expert Support - PMC Motorsport Team
Not sure which kit to choose? Our technical team is ready to assist you. We provide full after-sales support and installation guidance via our contact form.
Replacement Parts
We maintain a full stock of individual components. Every part of our kit can be purchased separately if needed.
Trusted by thousands of customers worldwide, from daily drivers to professional motorsport teams.
PMC Motorsport adapters and flywheels are proven in the most demanding drift and circuit racing environments.
Quality is our priority. Every component undergoes rigorous multi-stage inspection and is engraved with a unique serial number for traceability.
Certified Quality: PN-EN ISO 9001:2015
We offer worldwide shipping. EU (mainland) and UK shipping costs are calculated automatically. For other regions, our team will provide a custom shipping quote after you place your order.
IMPORTANT: Custom duties and local taxes are not included in the shipping quote and are the responsibility of the buyer.
VAT 0% (B2B & Export)
We offer 0% VAT for international B2B customers with a valid EU VAT number (VIES) and for all exports outside the European Union.
Once verified in the VIES system, we will manually adjust your order to remove the VAT charge.
| Flywheel Weight [kg / lbs | Mass Reduction vs OE [%] | BMW OE Part Numbers |
| 6,34 / 13,98 | 61% |
21208605490 / 8605490 21208667195 / 8667195 |
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Note for Enthusiasts: A lightweight flywheel provides uncompromising performance and engine response by removing factory harmonic dampening. This results in a more mechanical feel and more direct power delivery. Please be aware that this can naturally increase the noise from the gearbox (gear rattle), which is a normal characteristic of performance-oriented rigid flywheels.