BMW Rear Guide Rod Kit

HP Autosport · 12-23-2008, 12:02 AM

*Original guide rods were made to deflect under load, a bad thing for good handling and traction(in of the the product images you can see where the stock 335i guide rod can deflect and bow under cornering and acceleration loads)

*Aluminum guide rods are made of all aluminum, a lightweight component thereby reducing wear and tear on other, more critical parts (rear subframe, control arm bushings, etc) Each guide rod weighs just over 1.5 lbs making for a total of ~3 lbs for both parts (stock guide rods weigh 2.1 lbs each or 4.2 lbs for both). A weight savings of over 1.2 lbs from the rear suspension.

*Bushing with a rubber material at one end is replaced by a sealed joint for deflection and noise free operation. Bushing deflection is unwanted because it leads to excess suspension movement. This is bad for handling and traction due to constant alignment changes. Plus, any power from the engine can take longer to get to the ground because it has to windup the bushing first.

The traction link is no brainier. You will have better traction and braking and more stability and you will feel this under acceleration. The traction link is actually a tuned spring so it is designed to deflect a lot under load which is really bad for the suspension control. This is the most important link to replace.

Customer review of the guide/torque link kit along with the Quaife LSD:

http://www.n54tech.com/forums/showpo...31&postcount=1

Retail is $412.80

$359.13 per set!

Order here:

http://www.hpashop.com/BMW-Rear-Guid...kit-e9x-m3.htm

We now have the TRW version of the guide rods as well for those looking to save some money

$259.95 for the set

Order here:

http://www.hpashop.com/BMW-Rear-Guid...de-Rod-TRW.htm

I335 · 01-01-2009, 10:01 AM

Sounds interesting, but can you explain what differences we will actually feel if we install one of these? You say it can take longer to get power to the ground with the stock part, so are you saying we'll get faster acceleration? How much faster? And better handling? Will the car corner flatter with this part? What is it exactly that we can expect to feel? Is the difference noticeable in everyday driving or do we need to be at 9/10ths on a track to appreciate the change? Just trying to understand what the tangible benefits are and if they will apply to every day driving... Thx!

MuchMoore · 01-01-2009, 12:34 PM

Quote:

Originally Posted by I335

Sounds interesting, but can you explain what differences we will actually feel if we install one of these? You say it can take longer to get power to the ground with the stock part, so are you saying we'll get faster acceleration? How much faster? And better handling? Will the car corner flatter with this part? What is it exactly that we can expect to feel? Is the difference noticeable in everyday driving or do we need to be at 9/10ths on a track to appreciate the change? Just trying to understand what the tangible benefits are and if they will apply to every day driving... Thx!

I think these are part of a group of parts which together will provide you with a tangible benefit. Its hard to change one suspenion piece aside from shocks/struts/sways and really "feel" it driving on the street. If you plan on adding more of the M3/aftermarket components, then these are def a good idea, but Im not sure if by themselves they even matter.

HP Autosport · 01-02-2009, 02:37 AM

Quote:

Originally Posted by I335

Sounds interesting, but can you explain what differences we will actually feel if we install one of these? You say it can take longer to get power to the ground with the stock part, so are you saying we'll get faster acceleration? How much faster? And better handling? Will the car corner flatter with this part? What is it exactly that we can expect to feel? Is the difference noticeable in everyday driving or do we need to be at 9/10ths on a track to appreciate the change? Just trying to understand what the tangible benefits are and if they will apply to every day driving... Thx!

Depends on how sensitive you are to suspension settings. What I can feel is diff than what you can feel.

Going from a bushing to a joint, you should feel that right away.

I think the best way to explain it is for you to hop in a new M3 and find out for yourself.

flukey · 02-03-2009, 09:28 AM

What would you estimate for installation time?

HP Autosport · 02-03-2009, 11:19 AM

Quote:

Originally Posted by flukey

What would you estimate for installation time?

45 minutes

OneBad335XI · 02-18-2009, 02:35 PM

Quote:

Originally Posted by HP Autowerks

Why wait to get yours from your local BMW dealer, we have these in stock and ready to ship!

Hmmmmmmmmm I might have to do this.Will it fit an XI?

HP Autosport · 02-18-2009, 02:42 PM

Quote:

Originally Posted by OneBad335XI

Hmmmmmmmmm I might have to do this.Will it fit an XI?

Yes!

OneBad335XI · 02-18-2009, 05:01 PM

Even with stock everything (suspension-wise) I will notice a difference?

HP Autosport · 02-18-2009, 05:29 PM

Quote:

Originally Posted by OneBad335XI

Even with stock everything (suspension-wise) I will notice a difference?

Well, there will be a difference, but not as much as if you had coil-overs and other suspension mods.

The front tension rods and lower wishbones will make a huge difference for you, but every little bit helps!

HP Autosport · 02-23-2009, 11:47 PM

These guide rods are now back in stock, but they won't be on the shelf for long. Order your today!

HP Autosport · 04-07-2009, 12:48 AM

Looking for a bit more traction? These guide rods will help you plant your tires better and give you a bit more traction.

OEM 335i guide rods are flexible and have way too much deflection when compare the the M3 pieces.

BMWGator · 08-18-2009, 12:10 PM

Quote:

Originally Posted by HP Autowerks

Looking for a bit more traction? These guide rods will help you plant your tires better and give you a bit more traction.

OEM 335i guide rods are flexible and have way too much deflection when compare the the M3 pieces.

I can vouch for this! Harold hooked me up with the M3 parts and this was one of the 1st things I noticed when I got my car back...better rear wheel traction and the rear stays more planted under hard acceleration (i.e. prior to this, the rear tires would tend to chirp a bit before gripping). Definitely a great mod!

HP Autosport · 09-02-2009, 10:26 AM

Quote:

Originally Posted by BMWGator

I can vouch for this! Harold hooked me up with the M3 parts and this was one of the 1st things I noticed when I got my car back...better rear wheel traction and the rear stays more planted under hard acceleration (i.e. prior to this, the rear tires would tend to chirp a bit before gripping). Definitely a great mod!

Excellent!

cgeorge · 09-16-2009, 03:49 PM

what are the torque links that the reviewer above speaks of?

HP Autosport · 09-16-2009, 04:09 PM

Quote:

Originally Posted by cgeorge

what are the torque links that the reviewer above speaks of?

http://www.realoem.com/bmw/showparts...30&hg=33&fg=30

Item#19

MuchMoore · 09-16-2009, 05:53 PM

Kind of a dumb question, but would an alignment be needed after installation?

HP Autosport · 09-16-2009, 06:31 PM

Quote:

Originally Posted by MuchMoore

Kind of a dumb question, but would an alignment be needed after installation?

No, not on these!

scottp999 · 05-26-2010, 09:45 PM

Harold,

I got the Quaife from you recently. Getting the BMW Performance Suspension, including th perf. springs soon, and I may have enough left in the wallet for just the M3 guide rods for now. I saw in another post you mentioned how you just unbolt these and put the new ones in. In the Bentley manual it talks about having to losen the stabilizer links and rotate the sway bar upwards to get room to work. Just want to confirm it can be done without that step?

Quote:

Originally Posted by HP Autowerks

The Guide Rod Kit is even easier to install than the Tension Rod kit. One 18mm head bolt and one 18mm nut and bolt, out comes the guide rod, installation is reverse of the removal, move on to the other side and repeat!

I wold say after the wheels are removed...no more than 10-15 minutes per side, maybe less if you are quick! No need to align the vehicle after replacement.

from: http://www.e90post.com/forums/showpo...&postcount=207

Thanks!

HP Autosport · 05-26-2010, 10:35 PM

Quote:

Originally Posted by scottp999

Harold,

I got the Quaife from you recently. Getting the BMW Performance Suspension, including th perf. springs soon, and I may have enough left in the wallet for just the M3 guide rods for now. I saw in another post you mentioned how you just unbolt these and put the new ones in. In the Bentley manual it talks about having to losen the stabilizer links and rotate the sway bar upwards to get room to work. Just want to confirm it can be done without that step?

from: http://www.e90post.com/forums/showpo...&postcount=207

Thanks!

If you have a wobble socket you can do it without disconneting the ARB endlink, but taking them off will make the job go a little quicker.

lamia2super · 05-26-2010, 11:17 PM

does it really cost that much to fabricate it? pretty pricey part for some small rods.

scottp999 · 05-27-2010, 09:09 PM

Thanks Harold. Does the kit you sell come with new self locking nuts and fastners? If not do you have the correct part numbers for those so I can order them seperatley or do you feel they are not needed? The diagram is hard to tell what to order.

Also, did you raise the price back up to retail? It was around $370.

Scott

12-23-2008, 12:02 AM	#1
HP Autosport Supreme Allied Commander 3845 Rep 54,376 Posts Drives: F80 M3 Join Date: Mar 2007 Location: Santa Barbara, AP, Brembo, GIAC, Koni, Ohlins, Performance Friction, www.hpautosport.com iTrader: (36)	BMW Rear Guide Rod Kit - Better traction and handling Original guide rods were made to deflect under load, a bad thing for good handling and traction(in of the the product images you can see where the stock 335i guide rod can deflect and bow under cornering and acceleration loads) Aluminum guide rods are made of all aluminum, a lightweight component thereby reducing wear and tear on other, more critical parts (rear subframe, control arm bushings, etc) Each guide rod weighs just over 1.5 lbs making for a total of ~3 lbs for both parts (stock guide rods weigh 2.1 lbs each or 4.2 lbs for both). A weight savings of over 1.2 lbs from the rear suspension. Bushing with a rubber material at one end is replaced by a sealed joint for deflection and noise free operation. Bushing deflection is unwanted because it leads to excess suspension movement. This is bad for handling and traction due to constant alignment changes. Plus, any power from the engine can take longer to get to the ground because it has to windup the bushing first. The traction link is no brainier. You will have better traction and braking and more stability and you will feel this under acceleration. The traction link is actually a tuned spring so it is designed to deflect a lot under load which is really bad for the suspension control. This is the most important link to replace. Customer review of the guide/torque link kit along with the Quaife LSD: http://www.n54tech.com/forums/showpo...31&postcount=1 Retail is $412.80 $359.13 per set! Order here: http://www.hpashop.com/BMW-Rear-Guid...kit-e9x-m3.htm We now have the TRW version of the guide rods as well for those looking to save some money $259.95 for the set* Order here: http://www.hpashop.com/BMW-Rear-Guid...de-Rod-TRW.htm Attached Images Last edited by HP Autosport; 01-04-2017 at 11:20 AM..
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01-01-2009, 10:01 AM	#2
I335 Brigadier General 123 Rep 4,249 Posts Drives: '08 335i Coupe Join Date: Jan 2008 Location: New England iTrader: (11)	Sounds interesting, but can you explain what differences we will actually feel if we install one of these? You say it can take longer to get power to the ground with the stock part, so are you saying we'll get faster acceleration? How much faster? And better handling? Will the car corner flatter with this part? What is it exactly that we can expect to feel? Is the difference noticeable in everyday driving or do we need to be at 9/10ths on a track to appreciate the change? Just trying to understand what the tangible benefits are and if they will apply to every day driving... Thx!
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02-03-2009, 09:28 AM	#5
flukey Go big or go home! 53 Rep 948 Posts Drives: E90 335xi Join Date: Jun 2007 Location: Iowa iTrader: (9)	What would you estimate for installation time? __________________
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02-18-2009, 05:01 PM	#9
OneBad335XI Private First Class 9 Rep 168 Posts Drives: 2009 Nissan GTR Prem. Join Date: Jan 2009 Location: Chicago iTrader: (2)	Even with stock everything (suspension-wise) I will notice a difference?
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02-23-2009, 11:47 PM	#11
HP Autosport Supreme Allied Commander 3845 Rep 54,376 Posts Drives: F80 M3 Join Date: Mar 2007 Location: Santa Barbara, AP, Brembo, GIAC, Koni, Ohlins, Performance Friction, www.hpautosport.com iTrader: (36)	These guide rods are now back in stock, but they won't be on the shelf for long. Order your today!
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04-07-2009, 12:48 AM	#12
HP Autosport Supreme Allied Commander 3845 Rep 54,376 Posts Drives: F80 M3 Join Date: Mar 2007 Location: Santa Barbara, AP, Brembo, GIAC, Koni, Ohlins, Performance Friction, www.hpautosport.com iTrader: (36)	Looking for a bit more traction? These guide rods will help you plant your tires better and give you a bit more traction. OEM 335i guide rods are flexible and have way too much deflection when compare the the M3 pieces.
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09-16-2009, 03:49 PM	#15
cgeorge Lieutenant 6 Rep 473 Posts Drives: 09 e92 Join Date: May 2009 Location: Dallas, Texas iTrader: (5)	what are the torque links that the reviewer above speaks of?
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09-16-2009, 05:53 PM	#17
MuchMoore Colonel 82 Rep 2,325 Posts Drives: 08 E90 335i Join Date: Jul 2008 Location: CenFla iTrader: (28)	Kind of a dumb question, but would an alignment be needed after installation? __________________ \| Andrew \| M Technik \| BMW Performance \| BBS \| Forge \| V1 \| LUX \| Bilstein \| Precision-Sport \|
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05-26-2010, 11:17 PM	#21
lamia2super Colonel 142 Rep 2,661 Posts Drives: 335i Join Date: May 2008 Location: Miami Beach, FL iTrader: (4) Garage List 2007 335i [10.00]	does it really cost that much to fabricate it? pretty pricey part for some small rods. __________________ FOR SALE https://www.e90post.com/forums/showt...0#post25342440
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05-27-2010, 09:09 PM	#22
scottp999 Brigadier General 133 Rep 4,764 Posts Drives: 4runner SR5 Join Date: Mar 2007 Location: MD iTrader: (2) Garage List 2007 BMW 335 [9.00]	Thanks Harold. Does the kit you sell come with new self locking nuts and fastners? If not do you have the correct part numbers for those so I can order them seperatley or do you feel they are not needed? The diagram is hard to tell what to order. Also, did you raise the price back up to retail? It was around $370. Scott
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