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  1. Hitch Adapters
  2. RockyMounts
  3. Hitch Extender
  4. Fits 2 Inch Hitch
  5. 8 Inch Extension
  6. 3500 lbs
RockyMounts Hitch Extender w/ Hitch Pin and Lock - 2" Hitches - 8" Long

RockyMounts Hitch Extender w/ Hitch Pin and Lock - 2" Hitches - 8" Long

Our Price: $59.95
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Hitch Adapters
Shipping Weight: 8 lbs
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This extension adds 8" of clearance to your hitch so you can mount an accessory without worrying about vehicle contact. Includes anti-wobble bolt and locking hitch pin. Great for vehicles with spare tires, recessed hitches, or van doors. 1-800-940-8924 to order RockyMounts hitch adapters part number RKY10008 or order online at Free expert support on all RockyMounts products. Great prices and Fastest Shipping for RockyMounts Hitch Extender w/ Hitch Pin and Lock - 2" Hitches - 8" Long. Hitch Adapters reviews from real customers.
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  • Reviews (38)
  • Q & A (0)
  • Photos

RockyMounts Hitch Adapters

  • Hitch Extender
  • Fits 2 Inch Hitch
  • 8 Inch Extension
  • 3500 lbs
  • Bike Racks
  • Cargo Carriers
  • Hitch Mounted Accessories
  • Trailers
  • RockyMounts

This extension adds 8" of clearance to your hitch so you can mount an accessory without worrying about vehicle contact. Includes anti-wobble bolt and locking hitch pin. Great for vehicles with spare tires, recessed hitches, or van doors.


  • Adapter extends trailer hitch receiver opening 8" away from the rear of your vehicle
    • Ideal for vehicles with spare tires, recessed hitches, van doors, or tailgates
    • Mount a bike rack without removing your spare or create extra clearance for your trailer
  • Threaded insert tube and anti-rattle hitch pin reduce movement in the hitch receiver
    • Removes more play and rattle than hitch extenders with standard hitch pin holes
  • Steel shank with black powder coat is durable and rust-resistant
  • Hitch extender, hitch pin, hitch lock, and keys included


  • Application: 2" x 2" trailer hitch receivers
  • Hitch receiver size: 2" x 2"
  • Weight capacity:
    • Maximum gross trailer weight: 3,500 lbs
    • Maximum tongue weight: 350 lbs
  • Overall length: 13"
  • Distance from center of hitch pin hole to center of hitch pin hole: 8"
  • Distance from the center of the hitch pin hole to the end of the shank: 2-1/2"
  • Distance from the center of the hitch pin hole to the weld of the receiver tube: 4"
  • Limited lifetime warranty

RockyMounts 10008 Hitch Extension Dimensions


  • Using a hitch extender will reduce your hitch's overall capacity by 50%
  • 3 Bike max (tongue weight reduces exponentially the farther from the hitch, do no load 4 bikes)

10008 Hitch Extension for RockyMounts BackStage, MonoRail, and SplitRail Bike Carriers - Locking - 2" Hitches - 8" Extension

Item # RKY10008

Customer Satisfaction Score:

Customer Reviews

RockyMounts Hitch Extender w/ Hitch Pin and Lock - 2" Hitches - 8" Long - RKY10008

Average Customer Rating:  4.8 out of 5 stars   (38 Customer Reviews)

This extension adds 8" of clearance to your hitch so you can mount an accessory without worrying about vehicle contact. Includes anti-wobble bolt and locking hitch pin. Great for vehicles with spare tires, recessed hitches, or van doors.


This hitch item not only worked exactly like I needed, but was of superior construction, as it included a unique primary lockpin idea that keeps the extension from wobbling, as well as locking the part to the vehicle receiver. I always get more value than expected on the accessories from etrailer.



Still the perfect hitch accessory, as mentioned, and I use it on all 3 vehicles I tow with.


This will give you the extra clearance needed between your bike rack and your tailgate. Had one stolen. just replaced it with this one that actually locks! Have not had a chance to install it yet.


I bought this hitch extender to move my Swagman bike rack further away from the back of my trailer because the bike handle bars were rubbing against the trailer. I chose this extension because of the anti-rattle pin to better secure the hitch during transport. This extension moved the bikes far enough away that the handle bars no longer rubbed against the trailer. It also allowed the receiver to be centered on the back of the trailer because the bike tires no longer interfered with the spare tire on the back, provided clearance to access the city water connection with the bikes still loaded, and provided better visibility to one of the rear taillights since the receiver could be moved to the center of the trailer. After a 2,000 mile journey, the pin never came loose and the bike rack on the extension rode smoothly. This extension solved many issues i was having with the bike rack on the back of my trailer.


High quality product. Works perfectly with my bike rack to give me the clearance I need to be able to lower the tailgate on my Tacoma without hitting the rack.


Just as promised. Solid extension, just what I needed.


Did the job, no issues. Received it pretty quick.


Love it! Easy to take on and off. Very solid! Highly recommend!


Job well done. Arrived quickly and in perfect packaging. Agent was very helpful advising me what would work for my application.


Works great. The eight inch extension was the perfect length to clear my spare tire. The locking anti-rattle pin eliminates any movement. My bike rack had a similar pin, so very secure installation. If the lock had a dust cover, it would be 5 star.


Prompt shipping, works as advertised. The keyed end of the hitch pin lock seems a little less than solid but really haven't put it through any stress yet, just one trip near town.


Excellent construction and supplied with anti-rattle lock.
I would purchase again and recommend to others.
Purchase made to allow tailgate to open without removing bike rack.


Nice product. Had to have it for bike rack to work on odyssey van. Nice that it came with locks too. I just leave it on all the time.


Works great! Keeps my Tule bike rack away from Subaru Outback tailgate. I would have preferred something and inch or two shorter.


Works perfectly on my Jeep. Bought this so we could put our bike rack on without removing the spare tire. Works like a charm high quality product with super easy installation.


Fast and easy and well built


Works perfectly, just what I needed so the bike rack would clear the spare tire on the wrangler!


I don't know what to think because I have not received the product. Contrary to what the delivery company says.

Etrailer Expert

Jenny N.


I will have our Customer Service team reach out to you.


Just what I needed, great company to do business with .


The staff at etrailer was very professional and helpful.


Heavy duty and priced right with anti rattle


Quick and easy to take off and put on. Very solid. No rattling, stays tight. I take it off for winter months so I can't say how it would hold up with snow/salt. But regulat wear and tear...great results


Delivered promptly, rugged, has worked perfectly, would highly recommend.


Everything I expected. Great service!!


Fit perfectly and easy to install.
good quality.


Show More Reviews

See what our Experts say about this RockyMounts Hitch Adapters

  • Depth of Pin Hole to End of Internal Shank for Hitch Extender # RKY10008
    From the center of the hitch pin on the female 2 inch hitch portion of the # RKY10008 to the back of the hitch opening measures right at 3-1/2 inches so since you need at least 2-7/8 inches this would fit and work well for you.
    view full answer...
  • Will RockyMounts Hitch Extender RKY10008 Work With RockyMounts BackStage Bike Rack?
    The RockyMounts Hitch Extender w/ Hitch Pin and Lock - 2" Hitches - 8" Long # RKY10008 you were looking at is the correct extender for the RockyMounts BackStage Bike Rack for 2 Bikes - 2" Hitches - Wheel Mount # RKY10002 you mentioned. This 8" extension will give you the additional clearance you need to clear the spare tire on your 2020 Jeep Wrangler. With that said there is not a way to order the # RKY10008 with a lock that matches the key your bike rack uses. I included videos of...
    view full answer...
  • Comparing the RockyMounts Hitch Extenders RKY10011 and RKY10008
    There are a few differences between the RockyMounts Hitch Extender part # RKY10011 (LS) and part # RKY10008. The first is that the LS model has a premium lock core body which more durable. It also has a better anti-rattle design so there will be a further reduction in movement.
    view full answer...
  • Can the Thule T2 Pro XTR Bike Rack Be Used with a Hitch Extender on a Sprinter Motorhome
    It really depends on the capacity of your hitch. Using an extender like the RockyMounts Hitch Extender # RKY10008 will decrease your hitches capacity by 50%. So, realistically you will need a hitch that has a tongue weight capacity of 400 lbs. or higher because that will then be cut in half. If your hitch is rated high enough, then you can use the Thule T2 Pro XTR Bike Rack # TH83JV. If your hitch is not rated high enough, please let me know. Also, provide me with the measurement from...
    view full answer...
  • Hitch Extender Recommendation to Clear Jeep Spare Tire
    Thule usually says to avoid using an extender with their bike racks but if you choose to do so to fit the Thule Apex Swing XT # TH9027XT with your spare tire then I recommend using one that has an anti-rattle device to keep everything secured really well. It's also worth noting that typically when you add an extender the catch is that you're reducing the weight rating of your hitch by 50%. I recommend checking out the RockyMounts Hitch Extender w/ Hitch Pin and Lock # RKY10008 because...
    view full answer...
  • Hitch Extender with at Least 5" of Clearance for 2" ATV Hitch Receiver
    Thank you for the photo! Pretty much all of our extenders have 4" or less for that clearance you're looking for except for the 18" Long Draw-Tite Hitch Extender for 2" Hitch Receivers # HE18. This is a bit longer than the 8" extension piece you were looking at but this is the only option that meets the specs you're needing. If you'd like to add an anti-rattle and locking hitch pin I recommend checking out the Anti-Rattle Trailer Hitch Receiver Lock for 2" Hitches # 63232 which has both...
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    Image 1 for
  • Trailer Hitch Adapter to use Thule DoubleTrack Bike Rack
    I have a solution for you that will allow you to continue to use your Thule DoubleTrack Pro XT Bike Platform Rack # TH92BJ, which does require you have a hitch pin hole at least 1-1/2" from the face of the receiver. The most cost-effective option is to use the Rockymounts Hitch Extender # RKY10008 which is designed for use with a bike rack so it has the necessary length from the hitch pin hole to the receiver. This extender will work in a 2" trailer hitch, which is the size you should...
    view full answer...
  • How to Determine if Yakima FullSwing Will Clear Spare Tire on 2020 Jeep Wrangler Unlimited Sahara
    For your application I recommend using the Draw-Tite Class III Trailer Hitch # DT78MR because when we installed it on a 2020 Jeep Wrangler Unlimited we found that from the center of the hitch pin hole to the rear edge of the bumper was 1". The Yakima FullSwing # Y02465 has a max distance of 6-3/4" from the center of the hitch pin hole to the furthest edge of the tire. Since the Sahara has a different bumper than the normal Wrangler you'll likely need the RockyMounts Extender # RKY10008...
    view full answer...
  • Does Hollywood Racks Destination Bike Rack Fit 2023 Jeep Wrangler 4xe
    Yes, assuming your 2023 Jeep Wrangler 4xe has a trailer hitch it is compatible with and can carry the Hollywood Racks Destination Bike Rack # HLY94FR. You just need to ensure you have the right clearance for the spare tire, and that will depend on your hitch. For example, when we test fit the Curt Trailer Hitch Receiver # C13392 on a '23 Wrangler 4xe we found it measured 9 inches from the hitch pin hole to the edge of the spare tire. The Destination measures 9-1/4 inches to the closest...
    view full answer...
  • Can I Use The Thule T2 Pro XT On A 2007 Toyota FJ Cruiser
    Yes, the Thule T2 Pro XT can work on your 2007 Toyota FJ Cruiser. Unfortunately, you will have to get an additional item for it to work. You will need to add a hitch extender to use this hitch bike rack. I recommend the RockyMounts Hitch Extender w/ Hitch Pin and Lock - 2" Hitches - 8" Long, part # RKY10008. It will adds 8" of length of your trailer hitch receiver. But keep in mind, whenever you add a hitch extender, you reduce the maximum tongue weight and the maximum gross trailer weight...
    view full answer...
  • Hitch Extension Options
    We have the Yakima StraightShot Hitch Extension, # Y69VR and the RockyMounts Hitch Extender, # RKY10008, among others. The problem however is that most manufacturers state these type products are not to be used with accessories on RV hitches. The amount of sway the back of many RV's receive can cause a lot of torque to be placed on the hitch. There are other similar items such as these two but be aware of the recommendation to not use on an RV. Your best bet is to consider shifting how...
    view full answer...
  • What 4-Bike Tilting Rack do You Recommend to Open My Trunk with Bikes Loaded?
    I have a great solution for you. However, the Thule Hitching Post Pro # TH934XTR can only tilt when bikes are unloaded. If you are set on a 4-bike rack that can tilt with bikes loaded to access the rear hatch on your 2016 Lexus RX 350, the best option is the Saris Freedom Bike Rack for 4 Bikes - 2" Hitches - Frame Mount # SA4414B or the fat-bike version # SA4414B-FB for bike tires that measure between 3-5 inches wide. While we cannot confirm for sure whether you can open the rear hatch...
    view full answer...
  • Recommended Extended Ball Mount or Hitch Extender for Towing Boat Trailer
    For your 2018 Tahoe and boat trailer needing a longer extension between them I recommend the Brophy Ball Mount for 2" Hitch - 3/4" Rise, 2" Drop - 13-1/4" Long - 10,000 lbs # BM20. Having a longer ball mount like this will not reduce the capacity of your hitch at all. This will give you a length of 13-1/4 inches from the center of the ball to the hitch pin hole. For a compatible hitch ball the shank needs to be 1 inch diameter for this mount. I recommend the 2 inch ball # 40038 or...
    view full answer...

Do you have a question about this Hitch Adapter?

Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Randy B
Installed by:
Randy B
Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Daron K
Edited by:
Daron K
Employee Zach D
Video by:
Zach D
Employee Jeanne D
Written by:
Jeanne D
Employee Brian T
Updated by:
Brian T

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