Most Popular Front Axle Suspension Enhancement for 2004 GMC Sierra

Highly recommend spending the money. My last pickup I bought Sumo Spring rubber stops and they seemed squishy to me, where these are hard and hold up very well. Holds my Boss V-XT 8'2" up where it needs to be. Don't go cheap! You'll regret it!

Works very well in the front of the truck. Made the truck sit 1" higher. Supports the snow plow well.

Sale rep was very helpful and made the sale easy. Fast shipping

Basically I was totally disappointed with the product. Instructions were very poor, at one point they said to install by using the rear hole of the two, there is only one hole in my truck. Instructions said to replace sway bar link bolt with the supplied bolt in the hardware kit. There were no nuts included to use the supplied bolts. My factory bolts were not the same size as the supplied bolts so nuts would not fit. Installation illustration was very poor. An actual picture would have been so much better. After install, there was no difference in my truck! This is no reflection upon etrailer. Steve even said that I could return if unhappy in any way but too much hassle to remove. Disappointment is all on timbren. I even tried calling timbren but they didn't answer and did not return my call. Thanks

The Timbrens have worked well on my '23 GMC 3500 Denali. I have a truck camper weighing 3500 lbs and I also use the truck to tow a '23 Durango Gold 356RLQ 5th wheel trailer.

They work exactly as advertised. Held my boss plow with 24 inch extension up off the ground. Only bad thing is you loose your smooth ride. front end is much stiffer. I recommend theses for use with plows. Excellent performance for the price.

My Timbren kit arrived quickly and was exactly as described. The fit on my '06 Sierra was perfect. Took me about an hour to install the fronts and an hour for the rears. The timbrens levels out my truck and elminated poor handling I was experiencing with a heavy load in the bed of my truck. I'm carrying equipment weighing about 1200 lbs in the bed of my truck. I was down on the front bump stops and had less than 1" of clearance on the rear stops. The timbrens leveled the whole truck and easily handle the load. I'm much happier with the ride and handling of my truck. It no longer rolls side to side through the corners and tracks normally on the freeway; even in high cross winds. etrailer.com provided good customer service and I really apreciated the fast updates on the status of my order.

Installed these on my 2010 GMC 3500HD diesel, install was relatively easy, noticed handling improvement on the first corner pulling my 30' fifth wheel camper

I replaced the factory jounce bumpers on my 2003 GMC Sierra 1500 Denali Quadrasteer with these from SumoSprings. I had replaced the rear ones the year before with SumoSprings, and was so pleased with Sumo that I did the fronts. The fronts were a little more difficult to install, in that you really have to jack the truck way up to generate the gap needed to get these front ones installed. However, once installed, I noticed an immediate difference in the feel of the truck. These are a little pricy, but they are worth it, and definitely outperform the factory jounce bumpers. If your old jounce bumpers are worn out and need to be replaced or if you are looking for a quick, easily installed ride improvement, then I recommend this upgrade. No regrets here after a year of driving on them.

A product that works as it should, my truck doesn't squat when carring a full load, and the front set prevents the nose of the truck from drooping when my snowplow is on, there for preventing extra wear on my blade. Truly easy to attach, A very good addition to my truck.

These coil spring helpers are near perfect in every way and easy to install. These do not not increase ride height in any meaningful, but instead both firm up a sagging coil spring suspension or one that that may be sprung a bit too soft from the manufacturer - as is the case with my chrysler pacifica. When the Pacifica is either at full passenger load or when adding tongue weight to my hitch - the pacifica sags and is too bouncy... even over parking log speed bumps - it is sprung very softly from the factory. I originally simply added the rear coil helpers, but after seeing how well they performed, I decided to put the front ones on as well. There are significant safety and enhanced drive-ability benefits having increasing suspension stability when a car is loaded down in any way. There is barely any noticeable ride quality degradation when the Pacifica is unloaded as the spring coil helpers are not being engaged except under load. Regarding installation - I used my band saw to cut off 1 inch from each spring so that the overlap was 3/4 inch when fully installed. Also, I used 4 quick squirts of spray Dawn dish soap prior to install - easy peasy...the spring helpers slid on without much fuss. I did use a large screw driver to assist seating the helper a bit, but installation was both easy and straight forward. These are high quality urethane coil helpers and not simply less performing and durable rubber ones - which wears out much faster and do not perform nearly as well.

I love how this makes my ride feel. Great product.