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BMW 3-Series (E90 E92) Forum > E90/E92/E93 Marketplace (For Sale / Trade / Wanted) > SPONSORS Classifieds/Groupbuys/Specials Area > Turbo Engine / Drivetrain / Exhaust Parts > Wavetrac® Differentials



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      10-25-2010, 11:48 PM   #1
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Wavetrac® Differentials - Special E90post.com pricing with FREE seals and shipping!

Enhanced No-Load Bias Ratio via its Wave Design Center Pack

One of the known shortcomings of a typical torque biasing differential is its loss of drive (behaving much like an open diff) under zero or near-zero torque conditions (for example, when there is 'no-load' applied through the drivetrain, either at vehicle stationary and/or transition from engine driving vehicle to engine braking and back).

The Wavetrac® differential uses a patent pending design to improve grip in low traction conditions. Precisely engineered, converging / diverging wave profiles are placed on one side gear and its mating preload hub. As the two side gears rotate relative to each other, each wave surface climbs the other, causing them to move apart. This imparts an increased normal force through the side gears, increasing the bias ratio as a function of load. This increase occurs automatically only when conditions find it necessary, and it 'reverts' back to its nominal bias ratio quickly and seamlessly, maintaining optimal drivability and performance at all times. It's like having two differentials in one: you get the benefit of a higher bias ratio when needed without detriment to the car's handling.

Interchangeable Friction Plates Provide Controlled Bias

Here's something else you won't find in any other design:

The Wavetrac® diff's behavior can be altered in the field to suit your needs. It comes standard with carbon-fiber bias plates for the best all around performance. Interchangeable plates using materials with different friction coefficients to fine-tune the bias ratio are sold separately.

These friction plates provide a mechanism to tune the response of the differential as a function of applied torque load. The applied torque load manifests itself as an axial load from the differential pinions into the housing. This axial force is then considered a normal force into the friction plate, and as a function of the effective coefficient of friction, will provide a resistive torque to the rotational motion of the differential pinions. The resistive torque will add to the resistance of relative rotation of all components within the differential. The resistive force, however, is non-uniform since it is a function of the axial load from the differential pinions. The unbalance of the resistive torque will manifest as non-uniform energy absorption within the differential causing a bias ratio.

Superior Design, Materials, and Construction

Designed from a clean sheet, the new Wavetrac® Differential brings current gear technology to the market. Internally, its gear tooth forms are optimized for strength and improved oil film retention over competitive designs. Our gear package is smaller, reducing overall mass, yet is more durable. Attention was also paid to the side gear/axle interface, putting as much material thickness as possible in this critical area - most important when power levels get high.

Each Wavetrac® Differential is crafted from the highest quality materials available. The internal gears are made from high strength 9310 alloy steel. The diff bodies are machined from case hardened steel billet. To complete the package, every Wavetrac® differential is built exclusively using high quality, high strength fasteners from ARP®, the world leader in fastener technology.

Retail: $1295

Sale Price: $1195
FREE stub axle seals (A $40 value)
FREE shipping to the 48 States (Up to a $35 value)

Order here:

http://www.hpashop.com/product.sc?pr...categoryId=185
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Last edited by HP Autosport; 10-20-2011 at 12:34 PM.
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      04-14-2011, 01:14 PM   #2
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I got 08 335i 6speed manual. Would this fit?
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      04-23-2011, 12:56 AM   #3
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I got 08 335i 6speed manual. Would this fit?
Yes, it will, but in a Wavetrac complete final dirve since you have a welded ring gear.
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      04-24-2011, 08:39 AM   #4
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i have a 2011 335is how much will the wavetrac diff cost shipped for a plug and play install
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      04-24-2011, 12:44 PM   #5
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i have a 2011 335is how much will the wavetrac diff cost shipped for a plug and play install
For the 335is with DCT, only the Quaife is available right now short of going to a much more expensive clutch style LSD.

You are looking at $2800 for a complete Quaife final drive plus $1800(refundable core charge) and $95 in freight to anywhere in the 48 States of US.
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      04-25-2011, 12:45 AM   #6
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pls pm what is avail for a 2009 e92 auto. thanks,
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      04-25-2011, 09:22 AM   #7
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Will this work for a:

10/2007 build 2008 335xi coupe 6AT?
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      05-09-2011, 02:03 AM   #8
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I have an 06/08 6mt E90 welded diff, can you PM me price. Thanks

Last edited by BLK_08E90; 05-09-2011 at 02:04 AM. Reason: .
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      05-16-2011, 01:49 AM   #9
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I have an 06/08 6mt E90 welded diff, can you PM me price. Thanks
Prices PM to you.
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      05-17-2011, 10:05 PM   #10
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Will this work for a 2010 335d?
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      05-17-2011, 10:38 PM   #11
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Will this work for a 2010 335d?
No, it will not.

You will need a unit from Quaife as Wavetrac does not have this application.
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      05-17-2011, 10:42 PM   #12
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Quote:
Originally Posted by HP Autowerks View Post
No, it will not.

You will need a unit from Quaife as Wavetrac does not have this application.
I am interested in a Quaife unit. Can you please provide me with some pricing? I contacted Patrick BMW about installing a Quaife LSD but they e-mailed me back about voiding my warranty. It's odd because Quaife lists them as an authorized installer.
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      05-19-2011, 03:29 AM   #13
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Prices PM to you.
didn't get a PM..can you kindly resend pls..thanks
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      06-07-2011, 02:45 AM   #14
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didn't get a PM..can you kindly resend pls..thanks
Replied!
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      06-15-2011, 02:57 PM   #15
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Could you pm me a price for a complete plug an play Lsd pumpkin (quife or wavetrac whichevers cheaper). I'm assuming I pay x price plus y deposit and i get y back once you guys get my stock pumpkin? Thanks
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      07-29-2011, 01:36 AM   #16
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Could you pm me a price for a complete plug an play Lsd pumpkin (quife or wavetrac whichevers cheaper). I'm assuming I pay x price plus y deposit and i get y back once you guys get my stock pumpkin? Thanks
PM replied.
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      07-29-2011, 10:03 AM   #17
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What does the final price come to with a pumpkin swap? I have a 08 335i 6mt so I know its welded.
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      08-18-2011, 01:46 AM   #18
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What does the final price come to with a pumpkin swap? I have a 08 335i 6mt so I know its welded.
$1995 plus freight after you have returned the core to us.
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      10-20-2011, 12:33 PM   #19
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Wavetrac LSD SALE!

Weavetrac LSD is on SALE for $1195, that is $100 off of retail.

That is not all, you will get FREE stub axle seals(A $40 value. You will need these for the install) and FREE shipping to the 48 US States.
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      12-02-2011, 09:04 AM   #20
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Is this sale still on? I've got an '06 330i 6MT (5/05 build date) and am considering the Wavetrac. Do you have this diff for my car?
Thanks!
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      01-19-2012, 06:51 PM   #21
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Is this sale still on? I've got an '06 330i 6MT (5/05 build date) and am considering the Wavetrac. Do you have this diff for my car?
Thanks!
Sale continues!
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      01-19-2012, 08:31 PM   #22
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So I'm interested but I don't know if my car has welded or bolted ring gears...

My car is a 2007 335i 6MT , 03/07 Build

Can you help?
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