New Year Sale Starts Now! Save up to 30%!

Roller J-Cups

4.7
Rated 4.7 out of 5 stars
28 Reviews
$69.99 USD

Make solo benching a dream with buttery smooth barbell adjustments.

Rack Type

Subscribe for exclusive offers and stock notifications



Product Details


Our innovative Roller J-Cups make solo benching a dream. Hefty build with durable nylon rollers to protect your barbell while making adjustments smoother than Usher on roller skates. For all the bench press lovers out there, this is a must.

60mm version: Fits our 60mm racks + cable towers & non-B.o.S. 60mm x 60mm racks with 5/8" holes. Includes durable nylon rollers & features a 600lb combined capacity.

Hydra version: Fits our Hydra racks & non-B.o.S. true 3" x 3" racks with 5/8" holes. The durable nylon rollers & UHMW double-padding protect your bar. Features an 1,000lb combined capacity.

Manticore version: Fits our Manticore racks & non-B.o.S. true 3" x 3" racks with 1" holes. The durable nylon rollers & UHMW double-padding protect your bar. Features a 1,000lb combined capacity. Includes quick-locking mag pins and additional UHMW inside to protect your rack.

PRODUCT SPECS



4.7
Rated 4.7 out of 5 stars
Based on 28 reviews
Total 5 star reviews: 21 Total 4 star reviews: 5 Total 3 star reviews: 2 Total 2 star reviews: 0 Total 1 star reviews: 0
93%would recommend this product
Slide 1 selected
28 reviews
  • SO
    Salvador O R.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    3 months ago
    J-Cup review

    The J-Cups are amazing. The bar is easily adjustable because of the rolling pins. I 100% recommend this Product. The only issue I have is the rear locking pin hole doesn’t match my cage holes.. Unfortunately I can’t use them. Other than that overall amazing product.

    Bells of Steel USA
    3 months ago
    Thank you so much for the great review, we're so glad you enjoyed your new equipment! Unfortunately some brands' hole spacing doesn't match some of our attachments. Let the Gainz begin, BoS Crew
  • JN
    Jason N.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    4 months ago
    Great product!

    They do exactly what they’re meant to do. I’m so happy I bought them, and they didn’t cost the same price as my entire squat rack.

  • D
    Ducky
    Flag of United States
    Verified Buyer
    I recommend this product
    Rated 4 out of 5 stars
    1 year ago
    Great entry level roller j-cups

    Confirmed rear locking pin. A lot beefer than what I expected. Rollers spin nicely, but these are brand new, I don't know how long these will hold up. The rear locking pin is a huge plus, and I hope these are on sale separately. The pin is on there real tight and I could not hand loosen them. They also came in dined up.....which was sad. I gave this a 4 stars cause I wished it had the UHMW on top and front of the roller, in case I hit the front of the rollers while racking. Also, if it had some bracing on the sides, it probably hold 1K in weight (BOS confirmed these are like the Hydras, 600 lb limit). I don't lift that, but it probably would last a lot longer.

    Overall these are probably going to be the best entry level rollers j-cups on the market. I'm happy I got them and differently would recommend. I hope your locking pins aren't dined up like mines.

    Bells of Steel USA
    Hi There, Thank you so much for reviewing our manticore roller j cups. We are so happy to hear you have been overall pleased with these. We apologies for any damage occurred during shipping and if you have any issues please don't hesitate to reach out to us. We wish you the very best. Sincerely, Marcus & the BoS team
  • MS
    Michael S.
    Flag of United States
    I recommend this product
    Rated 5 out of 5 stars
    3 years ago
    Need Roller J hooks for Titan X2 rack

    Needed or more so wanted, roller j hooks for my titan X2 rack. These are close in size that I took a gamble and bought them. Not disappointed at all. These seem really durable. The rollers are very smooth. They make centering the bar so much easier now. I mostly use a 32 mm rogue squat bar and anything over 225 the bar would not shift to either side very easily. They save time and most importantly energy when re-centering the bar. At 300+, I would have to pick the bar up and shift it over on the stock j hooks, NOT ANYMORE. These make life so much simpler. Roller j hooks should just come stock with all racks from everyone. SO to get these to fit the X2 rack, I used a 2 part epoxy and glued - 1/8" thick UHMW plastic on the insides of the j hooks. Its not the prettiest looking but I was short on time and I don't care about how they look on the inside...I have attached photos for a reference.

    On a side note, B.O.S. contacted me before they shipped this out as to as ask if these will fit my rack cause there was no record of me owning a B.O.S. rack. thought it was strange but ok. Delayed shipping by about 2 days just to confirm these would fit. I knew the pin would fit an just had to do some math on the plastic inserts.

    Bells of Steel USA
    We're excited you love your Roller J Cups! We're even more excited you were able to "adjust" them to make them fit for you. We like to confirm with customers that don't have our racks to make sure the attachment they purchased fits their rack prior to shipping. Thanks for the review, now back to the gainz! Erica and the B.o.S Crew!
  • EN
    Eric N.
    Flag of Canada
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    3 years ago
    Amazing

    Can't get this anywhere else let alone for the price. Great quality, use it on my lever arms to simulate a assisted lifted off without a partner in benching. Only suggestion is to add uhmw plastic. Great company to buy from

Reviews LoadedReviews Added
WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov
Hydra Roller J-Cups
Bells of Steel

Roller J-Cups

From $69.99 USD

Our innovative Roller J-Cups make solo benching a dream. Hefty build with durable nylon rollers to protect your barbell while making adjustments smoother than Usher on roller skates. For all the bench press lovers out there, this is a must.

60mm version: Fits our 60mm racks + cable towers & non-B.o.S. 60mm x 60mm racks with 5/8" holes. Includes durable nylon rollers & features a 600lb combined capacity.

Hydra version: Fits our Hydra racks & non-B.o.S. true 3" x 3" racks with 5/8" holes. The durable nylon rollers & UHMW double-padding protect your bar. Features an 1,000lb combined capacity.

Manticore version: Fits our Manticore racks & non-B.o.S. true 3" x 3" racks with 1" holes. The durable nylon rollers & UHMW double-padding protect your bar. Features a 1,000lb combined capacity. Includes quick-locking mag pins and additional UHMW inside to protect your rack.

Rack Type

  • 2.3" x 2.3" (5/8" Holes) - Pair
  • Hydra (3" x 3"; 5/8" Holes) - Pair
  • Manticore (3" x 3"; 1" Holes) - Pair
View product