SKU: 1714776562

Dorch Engineering S55 Lift Kit Upgrade - BMW / S55 / F8X / M2 / M3 / M4

Sale price$868.50 Regular price$965.00
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Ships within 48 hours · Estimated delivery Jul 30 - Aug 4

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Description

Dorch Engineering S55 Lift Kit Upgrade - BMW / S55 / F8X / M2 / M3 / M4We are proud to offer an unmatched game changing product for the S55 community! Rather than offer our standard HPFP upgrades for the S55 platform, we went back to the drawing board to come up with a higher flowing and easier to tune solution that saves you a TON of money over tradition HPFP upgrades! With this innovative solution we are able to push 38% more fuel flow out of the OEM HPFPs! We start with Genuine BMW vacuum pump cores and install our

We are proud to offer an unmatched game-changing product for the S55 community! Rather than offer our standard HPFP upgrades for the S55 platform, we went back to the drawing board to come up with a higher flowing and easier to tune solution that saves you a TON of money over tradition HPFP upgrades! With this innovative solution we are able to push 38% more fuel flow out of the OEM HPFPs! We start with Genuine BMW vacuum pump cores and install our Dorch Engineering Cam within the OEM assembly using our proprietary manufacturing tooling and validation equipment. Since the S55 engine uses some of the smallest fuel pump cams in the Bosch lineup, we are able to achieve this additional flow without sacrificing any of the longevity or reliability of the OEM pumps. There’s no cutting, no bending, no crimping, etc. This kit drops right in like factory and it does not require any special tuning to get up and running. All of the safety and sophistication of the stock DME remain in place. This is not only the highest flowing, but also the ONLY HPFP upgrade available that will successfully pass emissions on OEM DME mapping; all for a fraction of the price with a lifetime warranty!

 S55 HPFP Flow Capacities

Pump Model Fuel Flow (cc/rev) E85 Power Capacity (cc/rev)
HDP5 (Stock S55) 1.527 600whp
HDP5 w/ Dorch Lift Kit 2.100 800+whp*


*At 800whp on E85 there is quite a bit of capacity left in our S55LK, but that’s the most that we can get out of the currently available upgraded injectors on the market.

Software changes are NOT required to run this upgrade. However, we do have preset optimized maps available via Bootmod3 and MHD. Simply check the box for our “Lift Kit” upgrade when flashing.

NOTE: The S55 fuel system is very much limited by the injectors. In order to see the true benefits of this kit, it is highly recommended to upgrade to the larger S63 EU5 Injectors. These are readily available OEM BMW injectors proven to support 800whp on full E85.

Kit Contents:

  • Dorch Lifetime Warranty
  • Dorch Vacuum Pump Assembly
  • Vacuum Pump Sealing Cap
  • Vacuum Pump Gasket
Download Installation Guide 
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: 1714776562

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great unknown
San Leandro, US
★★★★★ 5
easy install, cleans well
Size: 26" 20" 12"
took less than 10 minutes for front and back replacement: a lot of that was spent on figuring out how to get rear wiper removed. perfect fit. by geometry, installing passenger front wiper was a little more tricky simply because of the reach issue [and I have long arms]. but that's not a problem with the wipers. windows were covered with pollen. using the spray and wipe option, they cleared up beautifully in one pass. note: OEM has a heavier bow with a joint in it to adapt to window curve. this wiper has a lighter, more flexible bow with no joints, but hugged the window perfectly. it may help that it's almost 90 F outside. waiting to see how it does in colder weather and with snow, and to see durability.
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Reviewed in the United States on May 20, 2026
K
Verified Purchase
Kate H
Grantham, US
★★★★★ 5
Good product
Size: 26" 18" 11"
Good value, easy to install, work well
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Reviewed in the United States on May 29, 2026
A
Verified Purchase
Amazon Customer
Louisville, US
★★★★★ 4
Great wiper
Size: 24" 20" 11"
Very effective. They are quiet and did the job. Easy to install.
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Reviewed in the United States on May 27, 2026
C
Verified Purchase
Craig R. Cubbage
Bozeman, US
★★★★★ 5
Would buy again
Size: 26"/14"/12"
These wipers are fantastic. They were easy to install and conformed to the windshield perfectly. Did a great job wiping the rain away. Best thing of all is they lock into place on the wiper arm.
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Reviewed in the United States on May 3, 2026
C
Verified Purchase
"cpalm1"
Whiting, US
★★★★★ 5
Great value
Size: 26"/17"/14"
Used on a 2018 outback. These are an amazing value. All 3 fit perfectly and work great. They work smooth and silently
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Reviewed in the United States on May 4, 2026

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