🚛 Elevate your Tundra’s toughness—ride stronger, handle smarter!
The RAS® RoadActive Suspension 4611-TDHD is a premium, USA-made rear leaf spring upgrade designed for Toyota Tundra models from 1999 to 2021. It delivers up to 50% increased rear suspension strength and reduces vehicle squat by 2-3 inches, enhancing load capacity and road handling. This maintenance-free kit installs in approximately one hour without special tools, improving stability, reducing sway, and maintaining ride quality whether loaded or unloaded.
| Manufacturer | RoadActive Suspension |
| Brand | RAS |
| Item Weight | 30.1 pounds |
| Package Dimensions | 31.5 x 10.2 x 5.6 inches |
| Manufacturer Part Number | 4611-TDHD |
R**
Great so far .
Easy to install . Havent towed with it . Haul several loads of hay about 1600 lbs. Made the truck ride and handle so much better . Even empty the truck handles better . I set it at the 2mm , black chip setting . Have a 3 horse trailer thats 4300 lbs empty waiting for spring / summer to load it and try the suppension out .
M**.
2009 Toyota Tundra
Can’t say enough good things but these are a must have if you use your truck as a truck and haul heavy loads or tow. Worked really well with stock leaf springs and installed fairly quickly and straight forward with great instructions. Prevents the rear from sagging too much under heavy load and the ride is very civilized loaded or unloaded. Every truck should come with these from the factory.
A**N
Worth the money!
Super easy and quick install. YOU DONT EVEN HAVE TO REMOVE THE TIRES!. The RAS really helped improve the ride on my lifted Tundra and really helps off road. Especially when loaded and towing. Best purchase.
A**R
Worth the money!
Very pleased with the extra support to the rearend area of the truck. Added more stability while towing a 8000lb rv
T**M
Let’s you tow and haul
I can finally tow my trailer without my truck squatting a lot. Stability is good, unloaded ride is not changed much at all. It did add a bit of rake to the truck.
A**R
Great addition to my Tundra
It really helps with the truck loaded and trailering. Much better handling even with moderate (500 lbs) loads and a LOT of improvement when trailering. Pulling a 30 ft bumper pull travel trailer, close to the max tow weight of the '19 Tundra.
R**R
Easy install
The most difficult part is getting the truck jacked up sufficiently. That took messing around for an hour. After that it was very straight forward. Really does increase the load capacity.
B**G
Great product
I honestly can't believe how much the RAS helped my Tundra. This product is worth every penny and then some. I tow a heavy 16' enclosed car hauler trailer filled with equipment. Towing this trailer was "doable" before and now after installing the RAS system it is a piece of cake! Towing my trailer is now stable, smooth, and safe. The ride unloaded is also improved. My truck drives flatter in the turns and with less play in the rear, but the ride is not harsh at all. Win/win!The picture is after installation
Trustpilot
2 weeks ago
1 month ago
