SKU: 43563125769

MMR Crank Hub 4-pinned Single Piece Upgrade - S55 / N55

$368.55 $409.50
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Description

MMR Crank Hub 4-pinned Single Piece Upgrade - S55 / N55Engine failures caused by the standard three piece crank hub on the S55 & N55 engine are (unfortunately) well known, but these are fully addressed with the installation of the MMR Performance 4 Pinned Single Piece billet Crank Hub, together with the option of adding our Capture Plate for ultimate security. MMR Performance now offers this uprated version of our popular Single Piece Crank Hub, with a 4 Pin dowelled location that locks onto the end of

Engine failures caused by the standard three-piece crank hub on the S55 & N55 engine are (unfortunately) well known, but these are fully addressed with the installation of the MMR Performance 4-Pinned Single-Piece billet Crank Hub, together with the option of adding our Capture Plate for ultimate security. 

MMR Performance now offers this uprated version of our popular Single-Piece Crank Hub, with a 4-Pin dowelled location that locks onto the end of the crankshaft. 

The OE crank hub unit's friction plate are known to slip rotationally, causing the timing to alter enough that piston-to-valve contact can occur, leaving owners with a very expensive repair bill.

This 4-pin version of our Single-Piece Crank Hub kit is simply the ultimate solution to preventing this problem before it happens on high horsepower & torque engines.

The centrepiece of the MMR kit is the UK made CNC-machined one-piece crank hub, created from billet EN36 steel that's been heat-treated with a 0.75mm case hardening, making it incredibly strong and durable. Along with this comes four aerospace precision machined dowels that mechanically lock the hub to end of the crank itself, plus a brand new OE bolt. 

Installation of these dowels is certainly not a DIY job. But to make the job easier for the professionals, ensuring that the required crank modifications are made safely and accurately, the MMR kit also includes a full installation jig that includes a bolt-on drilling guide, a location bolt for this guide, plus an HSS rolled high speed Drill Bit.

Together, the Single-Piece design combined with the 4-Pin location ensures that there is now no way that the friction plates can ever slip. With the new OE crank bolt tightened appropriately, this delivers a transformational improvement in reliability versus the OE version.

As MMR Performance offers two versions of the Single-Piece Crank Hub, which is best for you, pinned or unpinned?  For most standard to Stage 1 tuned S55 & N55 engines, the unpinned MMR Single-Piece Crank Hub (MMR20-1003) is more than sufficient. Installation is more straightforward as the end of the crankshaft does not need to be precision drilled to mount the four locating dowels. However, for high power/torque engines tuned beyond this level, we recommend this upgraded pinned version of the Crank Hub that incorporates the 4-pin dowel drive mounting for the ultimate engine security.

OE Multi-Piece Crank Hub (L) compared to MMR Single Piece Crank Hub (R) 

Finally. as another option alongside the 4-Pinned Crank Hub, adding the MMR Capture Plate ensures that owners have complete peace of mind. 

The Capture Plate removes the possibility for the crank bolt to be able to loosen with the engine's vibrations or harmonics. The Capture Plate is an additional billet aluminium hat that securely bolts over the entire head of the crank bolt, making it literally impossible for the bolt to come undone. Please select from the product option below at point of ordering to include a Capture Plate with your order.

Single-Piece Crank Hub (L) with Capture Plate (R)

S55 and N55 bolt torque – 100Nm initial torque plus 270 degrees.

For BMW M2C, M3 and M4 S55-engined cars running high power and torque tuning setups, and N55-powered M2, M135i, M235i, 335i & 435i cars, MMR have engineered the most comprehensive solution on the market and at one of the most compelling price points. Don't run high power without one!

 

Read our Blog about the Crank Hub problems here:

 

This will fit all models with N55 and S55 engines. Most popular models:

 

BMW M2 F87 2015-2018

BMW M2 Competition F87 2018-2021

BMW M3 F80 - 2014-2019

BMW M4 F82 - 2014-2020

 

BMW M135i F2x 2011 - 2019

BMW M235i F2x 2013 - 2020

BMW 335i F3x 2011-2019

BMW 435i F3x 2013-2020

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: 43563125769

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absolut_beethoven
Lake Worth, US
★★★★★ 5
THE Best facial toner period!!!
Size: 6.8 Fl Oz (Pack of 1)
This review is for the 200ml bottle I am one of those few but very fortunate people that isn't allergic to anything, or sensitive to most soaps, cleansers and toners. Unfortunately now that I'm in my fifties my face isn't as fuss free as it once was and soaps and cleansers that were once okay, are now either too harsh for my skin or dry it out. Worse than that are those products that irritate my eyes, especially if they're meant to be used around that area. What gives with these manufacturers whose products are supposed to cleanse your face, but irritate your eyes? Of course sooner or later you're going to get some in your eyes regardless of how careful you are. Which brings me to this amazingly excellent cleanser. A more accurate description of this cleanser would a "cleansing toner" as it's not really a face wash i.e. it doesn't soap or foam up like other facial cleansers. As I'm a guy and don't wear any make up I can't vouch for its efficacy in that department. But I can vouch most enthusiastically for its ability to strip your face clean of excess oil and grime picked up during the day without leaving your face feeling dry or tight. I do use it around both my upper and lower eyelids with zero eye irritation at all. It leaves my face feeling clean and refreshed with only the slightest hint of a clean refreshing smell, so it won't interfere with your perfume or cologne. I use it twice a day as an in between facial cleanser/refresher to eliminate that grimy oily look between my daily showers. Highly recommended for doing an excellent job without irritating or drying out my skin. Try it out yourself as this could be the only skin toner that you'll ever need, and it's reasonably priced too. :)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 3, 2011
E
Verified Purchase
Erika and Huy
West Palm Beach, US
★★★★★ 5
Girlfriend approved !
Size: 13.52 Fl Oz
Works amazingly well, soothes skin, is super gentle, and removes makeup with ease
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Reviewed in the United States on February 8, 2026
M
maskedgamer
Charlottesville, US
★★★★★ 5
Thinks a fun little sniffy toy
Color: blue, Color: blue
My puppy seemed curious and didn’t mind playing with this sniffy toy. It’s large and well made and has plenty of title spots to hide stuff. I put kibble in it and my little puppy sniffed and googled a way. I guess this is great for keeping dogs busy and entertained. It’s a pretty cool little way to give dogs treats or snacks.
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Reviewed in the United States on March 7, 2026
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Verified Purchase
Jennifer L Cremata
Draper, US
★★★★★ 5
Very healing
I bought this for face but had also heard that this can be used for other skin issues. Yesterday, I cut my index finger with a label remover (basically a razor blade). Once I stopped the bleeding, I kept it clean and covered for a bit. Before bed, I decided to put a dab of this on my cut, when I woke up this morning, it's like a miracle! It barely hurts and looks quite healed!
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Reviewed in the United States on May 20, 2026
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DWF
Fort Morgan, US
★★★★★ 5
It works... very well... for me. VERY WELL.
I typically detest American companies as many of the products contain both harmful and helpful ingredients at the same time. So far, Prequel has EXCEEDED my expectations. PROS: It works for my skin. EWG gives good scores to Prequel also. Skin looks great afterwards. No scent. Lasts for hours with a healthy skin tone. You don't have to use a lot to cover an area (see below). CONS: Slightly greasy when applied so it not a lightweight cream. Small tube (see below). Pricey. You don't have to use a lot. I find that due to its slightly greasy nature, you can use much less to cover a greater area. Afterwards the greasiness disappears, leaving plump, healthy feeling skin texture. As with any skincare product, your skin may react differently. I have tried major Western brands which worsened my skin (Cereva for instance) before switching to Korean & Japanese products (far superior). Prequel is now the only Western brand I will use on a regular basis, to include their bar of soap (superior to my regular Korean brand).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 14, 2025

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