Wavetrac ATB LSD Built Limited Slip Differential BMW F20 F22 F30 2.81 (M140i, M240i & 340i)
Most BMW axles from 07 onwards were manufactured with a friction welded ring gear and open differential. This can cause some headaches for installation concerning vehicle downtime while the factory differential/ring gear is separated by precisely machining the parts away.
Wavetrac Europe has now solved this for the M240i equipped with the 33107603760 2.81 215 axles. Have a 3.08 Final Drive? We also stock an axle for this too!
Please provide your VIN and transmission type at the checkout during ordering or prior to member of staff by email or phone so we can verify which axle and ratio are correct for you so we supply the correct axle.
The Wavetrac® differential uses a patent pending design to improve grip in low traction conditions. Unlike any other helical gear diff on the market, the Wavetrac®’s behavior can also be fine-tuned in the field with optional components.
The Wavetrac® Differential will give you quicker acceleration and faster cornering by driving both drive wheels instead of just one. And, it offers improved no-load performance when compared to other helical gear differentials on the market.
Simply put – Wavetrac is the only gear diff on the market that does not lose all drive when one axle is unloaded. Axles become unloaded in aggressive driving, track cornering, extremely slick surfaces, etc. It happens more than most people realise.
We won’t go into torque bias ratios or the concept of how torque biasing diffs work at this point. Let’s get to how the Wavetrac affects performance:
For example, you have a conventional gear diff (OEM, Quaife, MF, OBX, Truetrac, Torsen, etc.), you’re on a race track for a track day and during cornering your inside wheel bumps over the curbing. This is normal for track driving. The issue is that for the brief moments your inside tire becomes unloaded when bouncing over curbs, your other wheel is not getting drive – is not putting power down. Gear diffs need load on both axles in order to function. The result on a track (or during aggressive driving) is that there are many times when a normal gear diff supplies only intermittent power to the gripping wheel.
Now, same track with Wavetrac: the patented cam device in the Wavetrac prevents loss of drive when that inside wheel is unloaded. The device is able to generate a load inside the diff (to replace the lost load as it happens) that can then be biased to the gripping wheel – in the end making more consistent power delivery through a corner. That makes the car more predictable, and faster overall.
30.309.172WKFM130 309 172WKFM130309172WKFM1Most BMW axles from 07 onwards were manufactured with a friction welded ring gear and open differential. This can cause some headaches for installation concerning vehicle downtime while the factory differential/ring gear is separated by precisely machining the parts away.
Wavetrac Europe has now solved this for the M240i equipped with the 33107603760 2.81 215 axles. Have a 3.08 Final Drive? We also stock an axle for this too!
Please provide your VIN and transmission type at the checkout during ordering or prior to member of staff by email or phone so we can verify which axle and ratio are correct for you so we supply the correct axle.
The Wavetrac® differential uses a patent pending design to improve grip in low traction conditions. Unlike any other helical gear diff on the market, the Wavetrac®’s behavior can also be fine-tuned in the field with optional components.
The Wavetrac® Differential will give you quicker acceleration and faster cornering by driving both drive wheels instead of just one. And, it offers improved no-load performance when compared to other helical gear differentials on the market.
Simply put – Wavetrac is the only gear diff on the market that does not lose all drive when one axle is unloaded. Axles become unloaded in aggressive driving, track cornering, extremely slick surfaces, etc. It happens more than most people realise.
We won’t go into torque bias ratios or the concept of how torque biasing diffs work at this point. Let’s get to how the Wavetrac affects performance:
For example, you have a conventional gear diff (OEM, Quaife, MF, OBX, Truetrac, Torsen, etc.), you’re on a race track for a track day and during cornering your inside wheel bumps over the curbing. This is normal for track driving. The issue is that for the brief moments your inside tire becomes unloaded when bouncing over curbs, your other wheel is not getting drive – is not putting power down. Gear diffs need load on both axles in order to function. The result on a track (or during aggressive driving) is that there are many times when a normal gear diff supplies only intermittent power to the gripping wheel.
Now, same track with Wavetrac: the patented cam device in the Wavetrac prevents loss of drive when that inside wheel is unloaded. The device is able to generate a load inside the diff (to replace the lost load as it happens) that can then be biased to the gripping wheel – in the end making more consistent power delivery through a corner. That makes the car more predictable, and faster overall.
30.309.172WKFM130 309 172WKFM130309172WKFM1Most BMW axles from 07 onwards were manufactured with a friction welded ring gear and open differential. This can cause some headaches for installation concerning vehicle downtime while the factory differential/ring gear is separated by precisely machining the parts away.
Wavetrac Europe has now solved this for the M240i equipped with the 33107603760 2.81 215 axles. Have a 3.08 Final Drive? We also stock an axle for this too!
Please provide your VIN and transmission type at the checkout during ordering or prior to member of staff by email or phone so we can verify which axle and ratio are correct for you so we supply the correct axle.
The Wavetrac® differential uses a patent pending design to improve grip in low traction conditions. Unlike any other helical gear diff on the market, the Wavetrac®’s behavior can also be fine-tuned in the field with optional components.
The Wavetrac® Differential will give you quicker acceleration and faster cornering by driving both drive wheels instead of just one. And, it offers improved no-load performance when compared to other helical gear differentials on the market.
Simply put – Wavetrac is the only gear diff on the market that does not lose all drive when one axle is unloaded. Axles become unloaded in aggressive driving, track cornering, extremely slick surfaces, etc. It happens more than most people realise.
We won’t go into torque bias ratios or the concept of how torque biasing diffs work at this point. Let’s get to how the Wavetrac affects performance:
For example, you have a conventional gear diff (OEM, Quaife, MF, OBX, Truetrac, Torsen, etc.), you’re on a race track for a track day and during cornering your inside wheel bumps over the curbing. This is normal for track driving. The issue is that for the brief moments your inside tire becomes unloaded when bouncing over curbs, your other wheel is not getting drive – is not putting power down. Gear diffs need load on both axles in order to function. The result on a track (or during aggressive driving) is that there are many times when a normal gear diff supplies only intermittent power to the gripping wheel.
Now, same track with Wavetrac: the patented cam device in the Wavetrac prevents loss of drive when that inside wheel is unloaded. The device is able to generate a load inside the diff (to replace the lost load as it happens) that can then be biased to the gripping wheel – in the end making more consistent power delivery through a corner. That makes the car more predictable, and faster overall.
30.309.172WKFM130 309 172WKFM130309172WKFM1£400 Exchange Surcharge* - Refunded on receipt of old diff
The exchange process is a simple 2 step process you can find below.
Pay for the product + the exchange deposit and we will send out to you
We will then refund the exchange deposit if a complete, usable (in good working order) axle is received within 10 working days. Axles which require maintenance/repair to be put into service or are not in working order will not be refunded. Before sending your axle to us, remove the electronic motor as we do not need this. For the surcharge to be reimburst, your non-damaged stock differential pumpkin needs to be returned within 28 days after you have received your fully built LSD. 
