Features

BMW LSD Helical E39 E46 E53 E60 E81 E82 E83 E85 E87 Blackline - HLF024

Item Description

Blackline BMW E39,E46,E53,E60,E81,E82,E83,E85,E87,E90,E92,F25 Helical LSD for vehicles fitted with 188L differential.

Suits:-

  • E39 Manual - 520d, 525i, 528i, 530i, 535i, Alpina B10 3.2 (with 2.93:1 final drive), Alpina B10 3.3
  • E39 Auto - 525d, 535i
  • E46 Manual - 320d (with std 2.79 ratio), 323i, 328i, 330i, 330xd
  • E46 Auto - 320d, 328i, 330xd
  • E53 Manual Rear Diff - X5 3.0d
  • E60 Manual - 520d, 530i
  • E60 Auto - 525d (after 03/2007)
  • E81 Manual - 118d
  • E82 Manual - 120d
  • E83 Manual Rear Axle - X3 3.0d
  • E85 Manual - Z4 2.2i, Z4 3.0i
  • E85 SMG - Z4 3.0i
  • E87 Manual - 116d, 120d
  • E87 Auto - 120d (up to 01/2007)
  • E90 Manual - 318d, 320d (with final drives 7566218, 7566274), 325d, 330d, 325i (with final drive 7566172)
  • E90 Auto - 318d, 320d, 325d, 330d, 330dx
  • E92 Manual - 320d, 325d, 330d, 325i (with final drive 7519942)
  • E92 Auto - 320d, 325d, 330d, 330dx
  • F25 X3 SDrive 20d, Rear Axle

Helical LSD Advantages:-

  • Equal rotational speed to both wheels
  • Torque distributed according to traction
  • Minimal service requirements - no clutches
  • Quick reaction compared to viscous LSDs
  • Gentle and progressive engagement, low noise
  • Easily controlled power take-off and drifting
  • Gears and body manufactured from 8620 alloy steel
  • Direct replacement into stock differential
Blackline Helical LSD's - How They Work
The Blackline helical LSD's are torque biasing, that is they distribute torque between the wheels, loading more torque towards the wheel with the best traction thus improving performance and driveabitily. Especially in low grip situations.
The helical gearing manages the distribution of friction within the LSD. When torque is applied to the helical gear system it creates force that pushes the gear into the differential body, thus creating friction. Increases of torque, increases the thrust force directly proprotional to the amount of torque. This allows the Blackline LSD to cope with considerable traction imbalance even under heavy power conditions, as would be the case on exiting a powered up corner. But at low torque conditions the LSD can differentiate quietly and smoothly, thus making the differential very suitable for normal road driving. The Blackline LSD uses the popular parallel axis helical geared configuration optimised for even load distribution. They are designed with a torque bias of 5:1 this means that if  one wheel loses traction then the wheel with the most grip can receive five times as much torque as the wheel that is slipping. However, five times zero is still zero, so all these helical LSD's work best when both wheels are 'planted' and some traction is still available on the slipping wheel. In practice this is rarely a problem as there is always some 'drag' on the slipping wheel, however some drivers expertly use left foot braking to partially lock the spinning wheel.
Note - Helical LSD's work especially well when combined with modern anti-lock braking systems.
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About Us

Rally Design, established in 1972, expanded from a lock up garage to now an impressive 42,000 sq ft warehouse.  Originally a supplier of fabricated motorsport parts to upgrade the iconic Escort Mk1/2.  Rally Design is now the premier UK supplier of motorsport hardware product including Polysport suspension bushes, Wilwood 4-pot braking and recently Blackline Atlas axles and LSDs.

Always the champion of the clubman, producing the volume to OEM quality and price levels, keeping motorsport affordable to all.

Payment

Rally Design accept payments by the following means:-
Quick and secure with Paypal.
Contact us to pay with a Credit or Debit Card
Pay upon collection in person from our store in Swalecliffe, Kent.  In store payment will need to be via Cash or Credit/Debit Card.
All our listing prices include VAT.
A full UK VAT invoice will be supplied with all orders.

If you have any further questions with regards to payment then please drop us a message in eBay.

Delivery

All of our goods are UK stock and supplied via our store.  We always strive to dispatch within 1 - 3 working days (usually same or next day).

Orders will be despatched via Royal Mail or courier (DPD Local, Tuffnels, or DX Freight depending on destination and parcel size/weight).

UK Mainland Tracked Services:-

All of our items are dispatched via tracked services as follows:

Royal Mail 24/48 Tracked.

DPD Local Next Day (with a 1hr delivery window if a mobile number is supplied upon order.)

Tuffnells (1-2 day delivery)

DX Freight (1-2 day delivery)

If you are outside of the UK or reside in the highlands or offshore islands then please contact us before ordering. 

International Services:-

Please note the only service for Internaitonal supply is via the eBay Global Shipping Program (GSP).  These are shipping via the same means as the above UK Mainland tracked services.



Returns

All eBay purchased items that are to be returned must follow within the eBay return proceedure.

Exchange

If you need to exchange an item, please contact us to make arrangements.  In most cases the quickest and easiest way would be to purcahse the replacement item and we can then refund for the original item.

Please make sure the item is in original packaging with all accessories otherwise a full refund may not be available.


Please make sure all returned parcels are sent via a tracked service with sufficient packaging to protect it from damage.
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