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Description
Go Rhino 69036880ST - RB20 Slim Line Running Boards with Mounting Bracket KitThe RB20 Slim Line Running Boards offer the same heavy duty toughness as the original RB Series, but with a slimmer design that fits tighter along the cab for increased ground clearance when off roading. Constructed from 16 gauge zinc coated galvanized steel, the Raptor inspired boards were built to protect your panels from flying debris while providing a full length step platform. The modern, bullet stamped design is 5 1 2 inches across at its widest
The RB20 Slim Line Running Boards offer the same heavy duty toughness as the original RB Series, but with a slimmer design that fits tighter along the cab for increased ground clearance when off-roading. Constructed from 16-gauge zinc-coated galvanized steel, the Raptor-inspired boards were built to protect your panels from flying debris while providing a full-length step platform. The modern, bullet-stamped design is 5 1/2 inches across at its widest point (compared with 7 1/2 inches of the original RB20) and are offered in cab-length sizes that fit most popular trucks, Jeeps and SUVs. The RB20 Slim Line come with a Limited Lifetime warranty on materials and construction and a 5 year warranty on the Textured Black Finish.
Running Board; RB20 Slim Line; Protective Bedliner Coated; Black; Mild Steel; Rocker Panel Mount
Features & Benefits
- Heavy Duty And Raptor-Inspired Running Boards With Slim, Low Profile Design
- Slim Design Sits Tighter Against Cab While Providing Step Surface And Increased Ground Clearance
- Modern Bullet-Stamped Board That Is 5 1/2 Inch Across At Widest Point
- 16 Gauge Zinc Coated Galvanized Steel With Durable Finish For Corrosion, Impact And Abrasion Resistance
- Protective Bedliner Coating
- Easy, No-Drill Installation
- Limited 5 Year Warranty
Attributes
- Type: Stationary
- Color/ Finish: Black Matte Textured Bed Liner Coated
- Material: Steel
- Mounting Location: Rocker Panel
- Lighted: No
- Wiring Type: Not Applicable
- Used With Extra Wide Flares: No
- Used With Mud Flaps: No
- Includes Mounting Bracket: Yes - Direct-Fit Type
- Drilling Required: No
- Estimated Install Time (Hours): 2
Specifications:
| Description_SHO | RB20 Slim Boards |
| Description_INV | RB20 Slim Line Running Boards w Brackets |
| Description_KEY | rb 20, RB 20, RB-20, Running board, running boards, nerf, Nerf bar, Nerf bars, nerf step, nerf steps, side bar, sidestep, side step, Side Steps, slider, side rail, side tails, side step rail, sides, drop step, drop steps, truck step, truck steps, |
| Description_DES | RB20 Slim Line Running Boards with Mounting Bracket Kit |
| Description_EXT | RB20 Slim Line Running Boards offer a rugged, full length step. The Raptor-inspired design is available with protective bedliner coating or textured black powder coat finish. Mounting brackets included. |
| Description_MKT | The RB20 Slim Line Running Boards offer the same heavy duty toughness as the original RB Series, but with a slimmer design that fits tighter along the cab for increased ground clearance when off-roading. Constructed from 16-gauge zinc-coated galvanized steel, the Raptor-inspired boards were built to protect your panels from flying debris while providing a full-length step platform. The modern, bullet-stamped design is 5 1/2 inches across at its widest point (compared with 7 1/2 inches of the original RB20) and are offered in cab-length sizes that fit most popular trucks, Jeeps and SUVs. The RB20 Slim Line come with a Limited Lifetime warranty on materials and construction and a 5 year warranty on the Textured Black Finish. |
| Description_FAB | 16-gauge zinc-coated galvanized steel with durable finish for corrosion, impact and abrasion resistance |
| Description_FAB | Limited Lifetime warranty on materials and construction and a 5 year warranty on the Textured Black Finish. |
| Description_FAB | Complete kit includes boards and mounting brackets |
| Description_FAB | Easy, no-drill installation |
| Description_FAB | Heavy duty, Raptor-inspired running boards with slim, low profile design |
| Description_FAB | Modern bullet-stamped board that is 5 1/2”across at its widest point and tapers down towards the rear |
| Description_FAB | Slim design provides increased ground clearance |
| Description_FAB | Protective bedliner coating |
| Description_DEF | Running Board |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 1072 reviews
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Product Reviews
★★★★★ 5
Quality No Show Socks That Are Comfortable and Durable
Size: Large, Color: (100) White / White / Black
These Under Armour no show socks are great for everyday training and casual wear. The cotton blend feels comfortable and they stay in place throughout the day. Getting six pairs in a pack is solid value for a quality brand. They hold up well after multiple washes and the no show style works great with most athletic shoes. A reliable go-to sock.
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Comfortable
Size: Large, Color: (001) Black / Black / White
I recently picked up a pair of Under Armour socks, and they’ve quickly become my go-to choice for daily wear and workouts. From the first wear, the fit felt snug and supportive without being too tight. The fabric is lightweight yet durable, and it does a great job wicking sweat — keeping my feet dry even during longer runs or intense gym sessions.
One of the things I appreciate most is the arch support and cushioning in the right places. It adds just enough padding where I need it, especially under the ball and heel of the foot, which makes a noticeable difference on days when I’m on my feet a lot. The socks also have a nice breathable mesh pattern that improves airflow.
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Reviewed in the United States on January 4, 2026
★★★★★ 5
Absolutely Essential for Any Athlete or Gym-Goer!
Size: Large, Color: (035) Steel / White / Black
I recently purchased the Under Armour Unisex-Adult Training Cotton No Show Socks 6 Pack, and I must say, they've become an indispensable part of my workout gear. Here's why these socks are a game-changer:
Comfort Above All: These socks are incredibly comfortable. Made from a blend of cotton and synthetic fibers, they provide just the right amount of cushioning without feeling bulky. Whether I'm running, lifting weights, or doing yoga, my feet feel supported yet free.
No Show, All Go: True to their name, these socks stay perfectly in place without slipping down into my shoes. This is crucial for maintaining a professional look at the gym or during sports activities. No more embarrassing sock peeks or having to constantly adjust them.
Durability: For the price, these socks hold up remarkably well. I've washed them multiple times, and they haven't lost their shape or elasticity. They've survived the rigors of both my workouts and laundry day.
Breathability: The material mix allows for excellent breathability. My feet stay dry and cool, reducing the chances of blisters or discomfort during long sessions.
Pack Value: Getting six pairs in one go is fantastic. It means I always have a fresh pair ready, which is perfect for someone like me who works out frequently.
Fit for All: These socks fit true to size and are designed to be unisex, making them a versatile choice for anyone looking to upgrade their sock game.
If you're in the market for socks that combine comfort, performance, and style, look no further. Under Armour has nailed it with these no-show socks. They've quickly become a staple in my wardrobe, and I find myself reaching for them over any other sock I own. Highly recommended for anyone serious about their fitness routine or just wanting reliable, high-quality socks.
5 out of 5 stars - These socks are a must-have!
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Reviewed in the United States on August 25, 2024
★★★★★ 5
My Husband’s Favorite Socks
Size: Large, Color: (035) Steel / White / Black
The Under Armour Unisex Training Cotton No Show Socks have become my husband’s absolute favorite socks—and he’s pretty picky about socks.
Comfortable Fit:
They’re soft, comfortable, and fit well without being too tight. They stay in place all day with no slipping or bunching.
Great for Everyday Wear:
Perfect for workouts, walking, and everyday use. They provide just the right amount of cushioning without feeling bulky.
Durable & Long-Lasting:
These hold up really well through regular wear and washing. They keep their shape and don’t wear thin quickly.
Reliable Under Armour Quality:
You can tell they’re well made. Consistent quality that matches what you expect from Under Armour.
Overall Impression:
When someone has a favorite sock and keeps reaching for it, that says everything. These are comfortable, durable, and dependable.
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Quality Under Armour socks
Size: Large, Color: (100) White / White / Black
Nice medium thick sock that is breathable but cushioned. It stays put in the show and doesn’t fall down. Fit is true to size, no show/minimal show
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026