SKU: 7113821906

H-Beam drijfstang 924S, 944, 928 + Turbo (set van 4) Lightweight

$303.47 $337.19
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Description

H-Beam drijfstang 924S, 944, 928 + Turbo (set van 4) LightweightDe H Beam wordt geleverd inclusief ARP bouten. Aanhaalmoment 75Nm Uitgebalanceerd op 0,2 gram. Gemaakt van 400CrNiMoa, Shot Peening, en een HRC33 38 HoH 150mm, Nieuwe H Beam drijfstangen ontworpen met nieuwe pistonpen bus. Deze H beam shaped drijfstang is lichter en sterker dan het origineel. De combinatie van 4 drijfstangen en 4 pistonpennen levert een totale gewichtsbesparing op van (hoe ironisch) 944 gram. Gewicht originele set: drijfstang +

De H-Beam wordt geleverd inclusief ARP bouten. Aanhaalmoment 75Nm
Uitgebalanceerd op 0,2 gram. 
Gemaakt van 400CrNiMoa, Shot Peening, en een HRC33-38
HoH 150mm, 

Nieuwe H-Beam drijfstangen ontworpen met nieuwe pistonpen bus. Deze H-beam shaped drijfstang is lichter en sterker dan het origineel. De combinatie van 4 drijfstangen en 4 pistonpennen levert een totale gewichtsbesparing op van (hoe ironisch) 944 gram.

Gewicht originele set: drijfstang + pistonpen = 989 gr
Gewicht nieuwe set: H-Beam + Slim fit pistonpen = 753 gr
Totaal verschil (983-753) x 4 = 236 x 4 = 944 gram

Gewichtsbesparing van 944 gram op complete set (H-Beam+pistonpen)

Koppeltoename ca 20Nm

Door vermindering van het roterend gewicht neemt het koppel van de motor enorm toe.
De motor toert sneller op. We hebben een winst van circa 20Nm gemeten op de Dyno met deze drijfstangen. 

Veel oude motoren draaien tgv slijtage nog slechts 170Nm. De Remap + MAF voegt daar ca 25Nm aan toe en deze nieuwe combinatie nogmaals 20Nm. Zo persten we uit een oude motor met 250.000 km zomaar 215Nm koppel met MAF+REMAP+H-Beam (std =205Nm).

Bovendien zijn de bekende dipjes in de koppelkromme bij 3000 rpm en 4000 rpm helemaal verdwenen. Dus daar is de winst in Nm nog sterker. 

De originele drijfstangen zijn sterk en zwaar.  Bij revisie blijkt toch regelmatig dat een drijfstang enigszins krom is en de piston pen bus versleten is. Om dit te corrigeren bij een revisie moet de drijfstang worden gericht en de piston pen bus vervangen en op maat  worden gehoond. De kosten hiervoor zijn al gauw 70 euro p stuk. Originele pistonpennen zijn niet meer verkrijgbaar of alleen tegen een hoge prijs. Ga jij de oude pistonpen hergebruiken?

Toepassing:
924S 2.5
944 2.5  2.7 3.0 turbo
944S & 944S2
968

94410300802

94410300101
94410300800
94410300802
94410300804
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SKU: 7113821906

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4.8 ★★★★★
Based on 5 reviews
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Product Reviews
J
Jamie K.
New York, US
★★★★★ 5
Perfect for Adding Privacy to a Piano Studio
Size: 2 Panel 8FT W, Size: 2 Panel 8FT W
I Ordered the 2 Panel version which is way too big for my needs... that's on me. So keep in mind that the picture shows a fabric made for two panels only being used on one and hence it is not pulled tight; it would pull tight and not be so wrinkly if it was set up properly as two panels. The metal pools that make up the panels seem to be well made, stable, and of good quality. They were very easy to put together and they stand up tall with plenty of height. The appearance of it with the fabric on it isn't as elegant as it could be, but it still looks good enough. The material is plenty solid, not allowing light through it, and thereby making a solid barrier. I am using it to block the view out the studio door when a student is sitting at the piano to avoid distractions from the hallway. It will allow a student to enter the studio with our distracting the student who is at the piano.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
J
Just Me
Battle Creek, US
★★★★★ 5
Room Divider That Gives Instant “This Is a Separate Space Now” Energy
Size: 3 Panel 12FT W
The Siebwin 3 Panel Folding Privacy Screen is surprisingly effective at changing the feel of a room without requiring construction, commitment, or somebody yelling about load bearing walls. The 12 foot width gives a substantial amount of coverage, making it useful for creating privacy, dividing open areas, blocking visual clutter, or setting up temporary sections within larger rooms. This saved us a ton of time and money in our new studio and enabled us to create a kitchen and office in one room. The wider feet make a huge difference because flimsy room dividers that collapse every time someone exhales too aggressively are deeply annoying. This one feels more stable and grounded once positioned. The folding design makes it easy to move around or adjust depending on the space, and it folds down relatively compactly when not in use. It is basically the introvert curtain wall of dreams. The material has a clean, neutral look that blends well into different room styles without screaming “temporary office cubicle panic.” It works well for apartments, studios, shared spaces, dressing areas, or simply hiding the mountain of chaos you swear you are going to organize tomorrow. Practical, portable, and refreshingly easy to use without turning setup into a three hour emotional event.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
S
Skeetre
Massapequa, US
★★★★★ 4
It's 2 panels holding 1 big privacy screen. Can't use as 2 separate 4' panels, but works great.
Size: 2 Panel 8FT W
This 2 panel privacy screen works well. Assembly was very straight forward, with easily labeled tubes. My son and I had it together in about 10 minutes, which was probably 3 minutes of me telling him to quit playing around and hand me the parts. It feels very sturdy, not likely to fall over or anything. The material fits well, with the Velcro being very strong. Measurements are all very accurate, with all pieces attaching properly. We have a similar privacy screen at work that we have to try and stretch out because the top and bottom Velcro doesn't fit quite right... this model does not have any issues though. The material is thin and light weight, but solid black so that you can't see anything through or behind it. I definitely think it's a great deal for the money. What I think would have given it 5 stars though, is if you had 2 totally separate 4' panels instead of 2 panels with one big screen. It really wouldn't cost any extra to make it so that the screen was in 2 pieces and you could use it as 2 separate panels instead of having to use it as one big panel. It says 2 panel folding privacy screens, but it's really one big one that folds in the middle.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
M
Verified Purchase
Mike Xu
Fort Morgan, US
★★★★★ 5
A Versatile & Stylish Solution for Instant Privacy and Space Definition
Color: Black
This AKTOP Room Divider is an absolute game-changer for creating flexible spaces in my open-plan apartment. The 71"x71" single panel is substantial, providing excellent visual privacy without making an area feel completely closed off. The sleek, minimalist black frame looks modern and professional, easily blending into my home office and living area. I've used it to section off a dedicated workspace, creating a psychological barrier from household distractions, and it works equally well as a stylish backdrop for video calls. What I love most is its freestanding and portable design. It requires no tools, drilling, or installation—I simply unfold it and place it wherever I need a temporary wall. It feels remarkably stable and well-made, with a sturdy metal frame and durable fabric that doesn't sag. The size is perfect for most applications. Whether you need to divide a dorm room, create a private nook in a studio, or set up a temporary partition in an office, this screen delivers fantastic functionality and style with zero commitment. It's a brilliantly simple and effective product.
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Reviewed in the United States on February 5, 2026
K
Verified Purchase
Kent Lee
Lexington, US
★★★★★ 5
Turning One Big Room into Two
Color: Black
My apartment is basically one big open space, so my living room, dining table, and “office” used to all blend together. After I got this screen, the whole layout finally makes sense. I set it up in the middle and now I have a clear work side and a chill side, and my background for video calls looks way more professional. This divider is a fixed style, so when you set it down it forms a nice straight line. Visually it really feels like a light, mini wall, which is perfect for breaking up a large area. It’s tall and long enough that it actually blocks what you want to hide, so you get real privacy, not just a decorative panel. The woven texture looks nice up close and doesn’t feel cheap, and the color is easy to match with other furniture. It’s not overly heavy either and I can slide it to a new spot by myself when I want to change the room layout. Most days I pull it out as a clean background for meetings and classes, and when I don’t need it as a divider I just move it against the wall and it still looks good there. If you have a big open room or a rental and want to create separate zones without doing any construction, this screen is a simple, effective solution. I’m already recommending it to friends who need more privacy in their space.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 29, 2025

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