Ferrea BMW S42/M42/M50/S50/M52/M54 Double Spring 7 Deg Pro CNC Titanium Retainer - Set of 12

Ferrea BMW S42/M42/M50/S50/M52/M54 Double Spring 7 Deg Pro CNC Titanium Retainer - Set of 12

Marsoni

M251S

$142.72

Get it in 3 business days with 1 day shipping. Friday, May 29

Ferrea BMW S42/M42/M50/S50/M52/M54 Double Spring 7 Deg Pro CNC Titanium Retainer - Set of 12SKU: E11025 Ferrea BMW S42 M42 M50 S50 M52 M54 Double Spring 7 Deg Pro CNC Titanium Retainer Set of 12 (1992 2006) Ferrea E11025 titanium retainers upgrade valve trains in BMW S42 M42 M50 S50 M52 M54 engines powering E36 E39 E46 Z3 Z4 models from 1992 to 2006. These 7 degree Pro CNC components secure double valve springs at minimal weight for smoother high RPM operation and greater durability. Engine builders select this set of 12 for dependable

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Was surprised that they're wide enough. Usually, shoes that say they're wide, aren't really wide. They're very cute and "hopefully" when I do wear them out, they'll continue to stay comfortable. I ordered both the Coffee Bean and Black, size 9. Usually wear a 9 or 9 1/2, the fit has plenty of room in the toe area with size 9.

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Reviewed in the United States on December 2, 2023

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Ashley Smith

Alexandria, US

★★★★★ 5

A wardrobe staple!

Excellent quality for the price.

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Reviewed in the United States on January 3, 2026

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Corinne

Lexington, US

★★★★★ 5

White boots

Size: 9, Color: White

Adorable white boots. They fit perfectly, comfortable, and cute. Nice and strong and durable.

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Reviewed in the United States on September 18, 2024

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Samson

Omaha, US

★★★★★ 3

Cute but Ouch

Size: 8.5, Color: Sand

Theses shoes are cute and comfortable to walk in *comfortable to the soles of your feet* HOWEVER, there is part of the inside seem on the outer right ankle that scrapes my leg with every step. I tried to see if wearing them down would help, wearing band-aids, putting duct tape on my leg, mole skin - but nothing helps, by the end of the work day I still feel that scraping seem. And I'm not usually sensitive to this kind of thing. I'm way outside my return window, so I'll have to pass them along to someone else with my same shoe size or donate them. Overall they're a good shoe - i just think mine had an issue when the seems were finished

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Reviewed in the United States on February 3, 2024

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Rebecca B.

Fort Morgan, US

★★★★★ 4

Size down 0.5!

Size: 8, Color: Black Lizard

Love the black snake skin look, I normally wear a size 8 and these fit more like an 8.5. Works with a thicker sock but I definitely recommend sizing down 0.5.

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Reviewed in the United States on July 12, 2025