SKU: 51729969389

HJS | B58 Gen 2 ECE Downpipe 300 cell for BMW 540i/640i/740i/840i/M340i/Z4/Toyota Supra 3.0

$877.50 $975.00
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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15

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Description

HJS | B58 Gen 2 ECE Downpipe 300 cell for BMW 540i/640i/740i/840i/M340i/Z4/Toyota Supra 3.0Technical Details: ECE road approval 300 cpsi stainless steel catalyst Pipe diameter 89 mm 76 mm with V belt clamp to the exhaust system Flow optimised inlet flange for optimum flow to the catalyst and Venturi effect to increase the flow velocity 50% raised Flow Bench Up to +15HP +20NM Manuf. Model Power Engine BMW M340i xDrive 275kW B58B30B BMW 540i 250kW B58B30C BMW 540i xDrive 250kW B58B30C BMW 640i Gran Tourismo 250kW B58B30C BMW 640i Gran

Technical Details:
• ECE road approval
• 300 cpsi stainless steel catalyst
• Pipe diameter Ø89 mm / 76 mm with V-belt clamp to the exhaust system
• Flow-optimised inlet flange for optimum flow to the catalyst and Venturi effect to increase the flow velocity
• 50% raised Flow Bench
• Up to +15HP / +20NM

Manuf.   Model                                 Power       Engine         
BMW       M340i xDrive                         275kW       B58B30B      
BMW       540i                                        250kW       B58B30C       
BMW       540i xDrive                            250kW       B58B30C     
BMW       640i Gran Tourismo              250kW       B58B30C   
BMW       640i Gran Tourismo xDrive  250kW       B58B30C       
BMW       740i Limousine                      250kW       B58B30C      
BMW       740i Limousine xDrive          250kW       B58B30C      
BMW       840i Cabrio                           250kW       B58B30C       
BMW       840i Cabrio xDrive               250kW       B58B30C       
BMW       840i Coupé                           250kW       B58B30C      
BMW       840i Gran Coupé xDrive      250kW       B58B30C       
BMW       Z4 M40i                                 250kW       B58B30C       
Toyota    Supra Mk5                             250kW       B58B30C       

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 51729969389

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4.0 ★★★★★
Based on 27 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
Carnegie, US
★★★★★ 3
Que no tiene pasadores para apretar el zapato
Size: 7 Wide, Color: Black/Black
Que viene en tallas pequeñas y pensé que venían con lazos y no fue así, el resto esta bien el peso muy conveniente
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
H
Verified Purchase
Heeia
Charlottesville, US
★★★★★ 5
Good looking shoe.
Size: 9 Wide, Color: Cognac
It's a good looking should which is true to size. Quality is good. However, it is not leather. Inner and outer covering are man made. For me, it's okay. I ordered a 9W which I knew would be no more than a triple E width. I'm actually a quadruple E width so it's taking a little longer to break in. I won't be using these as often as at this stage of my life, I don't have that have functions that require dressier shoes. I'm happy with this purchase, a good value for the price. The slip in feature works well like my Sketcher slip in.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 27, 2025
E
Verified Purchase
Ed
Phoenix, US
★★★★★ 5
Good shoes
Size: 8.5 Wide, Color: Cognac
Great shoes and very comfortable. Not very durable in my opinion. Good for dress or casual.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
D
Verified Purchase
Doc
Bozeman, US
★★★★★ 5
Great price great shoe
Size: 12, Color: Burgundy Polished Full Grain
Excellent shoe. Tried the Sebago penny loafer and the sizing was ridiculous. These J and M are sized perfectly. I’ve had them before and they wear like iron. Very comfortable right out of the box.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
R
Verified Purchase
roger mendes
Lake Worth, US
★★★★★ 5
One of the best shoes
Size: 9.5, Color: Black Polished Full Grain
Outstanding. Fashionable, most comfortable and good construction. No sines of use after quite some time. Highly recommended.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026

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