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Description
Give you BMW M340i or M440i with B58 engine a serious performance boost with the Endura Motorsport Extreme OPF/GPF Delete. Specially designed for models with OPF/GPF (2019+) for maximum flow, An louder and deeper sound and better throttle responseThe set fits perfectly between the downpipe and the OEM or aftermarket catback exhaust system – completely plug & play.
Made entirely from T304 stainless steel and manually TIG welded for a strong, durable finish. The tube runs from 3.5″ (89 mm) For 2x 2.75″ (70 mm) for maximum flow and a raw AMG-worthy sound.
Advantages
• Fit guarantee: perfect OEM fit
• 100% T304 stainless steel – durable, heat and corrosion resistant
• TIG welded – high-quality finish and maximum lifespan
• OPF/GPF delete – less back pressure, better performance
• 3.5″ → 2x 2.75″ design – higher flow than standard parts
• Compatible with both OEM as aftermarket exhausts
• Faster spool and noticeable better throttle response
• Perfect to combine with a Endura decat downpipe for maximum performance
Applicability
• BMW G20/G21 M340i (3.0 B58 – 374 hp) from 2019
• BMW G22/G23 M440i (3.0 B58 – 374 hp) from 2020
NB
• Software modification required: First have the ECU adjusted by a chip tuner before installation, otherwise error messages will occur.
• The original center section must be on both sides 1x to be sawn through for installation.
• Check local legislation regarding emission and MOT requirements.
BMW OEM reference
• 18 30 9 454 950 / 18309454950
Contents
• Complete OPF/GPF Delete set (3.5″ → 2x 2.75″)
• Exhaust clamps
• Transitions
Frequently Asked Questions
Will this fit with my original exhaust?
Yes, the set fits between the downpipe and the OEM catback. Also suitable for aftermarket exhaust systems.
Is there any welding required?
No, welding is not necessary. However, the original tube must be welded on each side. 1x to be sawn through to be able to correctly mount the OPF/GPF delete.
Will I get errors from removing the OPF/GPF?
Yes, without custom software, error messages will occur. Adjust the ECU in advance using a chip tuner before installation takes place.
Does this produce more power?
Yes, the lower back pressure increases the flow and enables additional power, especially in combination with a decat downpipe and tuning.
Article number: Endura-OPFD-G20
Additional information
| Brand | Fashion model | Model code | Performance |
|---|---|---|---|
| Brand | Fashion model | Model code | Performance |
| BMW | 3 Series | GXX - 19 -... | 340i-374 |
| BMW | 4 Series | GXX- 19 -... | 440i-374 |
Guarantee
Endura Motorsport stands behind the quality of all our products and offers a standard 12-month warranty on all our items, unless otherwise stated in the product description. We strive to ensure our customers long-term satisfaction and peace of mind when using our products. To use our warranty service, we ask customers to provide a valid proof of purchase. This invoice serves as proof of purchase and allows us to respond quickly and efficiently to any warranty claims. Please note that the warranty is valid only for the original purchaser and is not transferable to subsequent owners who purchased the product second-hand. We strive to handle every warranty claim with the utmost care and speed, so that our customers can continue to enjoy our products without interruption. Please feel free to contact us if you have any questions about our warranty terms or if you need assistance submitting a warranty claim. Your satisfaction is our top priority at Endura Motorsport.
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Endura Downpipe 4.5″ BMW B58 OPF (M340i, M440i, 540i, 640i, Z4 M40i, Supra)
Price range: €599.00 to €1,025.00 incl. 21% NL VAT Save €€100,00

Pros and cons
- 100% fit guarantee
- Pass guarantee
- More power and torque
- Optimal flow
- The neighbors wake up in the morning
- Engine fault light comes on, chip tuner can deactivate this
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