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Free Shipping!

When you buy fitness equipment from us, you receive our free curbside shipping option (limited to the 48 contiguous United States) right to your driveway or front of your residence.

Our HOME USE Warranty

When you buy one of our fitness machines, you instantly receive the following HOME USE warranty:

  • Frame: Lifetime limited (5-years)
  • Brake: Lifetime limited (5-years)
  • Parts/Electronics: 3-years
  • Labor: 1-year
  • Wear & Tear Items: 90-days

See our warranty page for more details.

30-Day Money Back Guarantee

If you purchased from our website and are not completely satisfied with your purchase, we offer a 30-day money back guarantee. You will only be responsible for return shipping and any assembly labor charges you may have purchased.

10% Military Discount

We're proud to support our American service members. As a small token of our appreciation, we offer all active and veteran Military personnel a 10% discount on our fitness equipment and accessories. After purchase, just email our customer service team at support@diamondbackfitness.com with a photo or a scanned copy of your Military ID or DD214 and we'll do the rest!

Discount cannot be combined with any other discounts.

510Sr Recumbent Magnetic Exercise Bike

Retail: $899.00 Sale: $799.00
Black Friday Sale: $599.00 + Free Floor Mat offer ends Sunday, Nov 25.
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Give Your Warranty a Boost

When you purchase the Diamondback Warranty Boost plan, it enhances our manufacturer's warranty in all of the right places. It's a one-time purchase that fully replaces our standard warranty with a comprehensive and longer lasting plan.

The standard warranty is 3-years parts and 1-year labor. However, with the Diamond Warranty Boost, you can boost your manufacturer's warranty to 5-year parts and labor warranty.

The Diamond Warranty Boost Plan includes:
  • Parts and labor coverage for 5 years
  • Power surge coverage
  • Mechanical and electric coverage
  • Convenient, hassle-free service
  • Deal directly with Diamondback Fitness, not a third party
  • No deductibles on covered claims
  • Professional on-site repairs

When you act today, you won’t have to worry about future equipment problems that could derail your workout plans. Give yourself the piece of mind knowing you’re protected no matter what happens.

Add the Diamondback Warranty Boost to your order today!

Financing Available:

Value and Performance

Top reviewed reviews
Top pick topfitness mag
Top reviewed smartreview

The Diamondback 510Sr is the most feature-rich, ergonomic recumbent bike on the market. A great way to get started on your fitness and rehab goals.

  • Adjustable seat and handle bars
  • 20 quick set programs
  • Integrated heart rate sensors
  • Variable speed cooling fans

510Sr OVERVIEW

510sr adjustable

A versatile recumbent design that’s perfect for riders of all levels

Whether you’re just starting a fitness routine or you’re a seasoned vet, the Diamondback 510Sr is the perfect choice. The ergonomic recumbent design is perfect for anyone who may be recovering from injuries or seeking a fitness routine during pregnancy. It’s also the perfect choice for seniors looking to begin, maintain or build cardio. 

510sr console

A personal trainer at your fingertips

Just like a personal trainer, the 510Sr gives you progress updates, workout options and more—all at the touch of a button. The advanced LCD rider display provides real time rider data like speed, time, distance, calories burned and heart rate. Meanwhile, 20 QuickSet workout programs ensure your workout never gets boring.

510sr heartrate

Burn more calories with heart rate training

Want to maximize the number of calories you burn in a single workout? Then it’s critical to stay in your target heart rate zone. The 510Sr makes heart rate training easy thanks to the integrated handlebar contact sensors. Simply grip the sensor to view your heart rate on the LCD display. Then let Diamondback’s built-in heart rate programs maximize your calorie burning for the most efficient workout ever!

510sr media

Creature comforts for a pleasant workout

Nobody said exercise has to be boring or painful. That’s why we’ve integrated creature comforts to keep you cool and content while you work out. The 510Sr features variable speed cooling fans that work harder when you do and a built-in media center with headphone jack and onboard speakers. There’s even a foldout magazine rack so you can educate while you perspirate.

510Sr FEATURES

510Sr LCD display

LCD display delivers real-time feedback

510Sr series console

Console with mp3 connectivity offers users the ability to broadcast their favorite tunes through the integrated speaker system

Personal cooling fans

Diamondback Fitness’ personal cooling fans allow you to vary the fan speed during your workout

Foldout magazine rack

Foldout magazine rack holds your favorite magazine during your workout and folds away when not in use

Adjustability

Tilt the console and handlebar angle for a customized fit

Target heart rate programs

Target heart rate programs and handgrip sensors help keep the workout intensity in the target zone

QuickSet program keys

QuickSet program keys help you start your favorite workout programs with a single touch

Scrolling message center

Scrolling message center guides you through program set-up

20 workout programs

20 workout programs and 16 levels of resistance provide a wide variety of workouts for all users

Frictionless eddy current braking system

Frictionless eddy current braking system is smooth and quiet

510Sr SPECIFICATIONS

Dimensions (assembled): 64″L x 23″W x 50″H
Dimensions (packaged): 67″L x 13″W x 31″H
Shipping Weight: 125 lbs.
Product Weight: 121 lbs.
User Height: 5′4″ – 6′4″
User Weight Capacity: 300 lbs.

510Sr QUESTIONS AND ANSWERS

Q: Is there any jarring when the resistance shifts?

No, it remains smooth between shifts.

Q: Does it need to be plugged in?

Yes. This machine uses an AC adapter that plugs into the front base of the machine. The correct power adapter is included in the box.

Q: Is the seat back made of a breathable mesh material?

Yes, it is.

Q: What is the flywheel weight of the 510Sr?

It weighs 14 lbs. However, the 510Sr is engineered to use frictionless magnetic resistance that is electronically controlled. Therefore, the flywheel weight isn't as important as it is on bikes without magnetic resistance.

Q: What maintenance is required on the 510Sr?

Always wipe down the unit with a mild soap solution followed by a thorough drying with a clean towel. It is important to note that perspiration can be extremely corrosive if allowed to accumulate on the machine. Also prior to each workout, confirm that all adjustment levers and screws are tightened. Tighten crank arms once per month.

Q: Will this machine work for my height?

The handlebars and seat can be adjusted to properly fit people between the heights of 5 ft 4 in and 6 ft 3 in.

Q: Does this come with coasting pedals?

No, it does not.

Q: Does it come completely assembled when delivered?

No, it arrives approximately 80% assembled in the box and does require some light assembly. All necessary tools and instructions are included in the box.

Q: Will will fit on the magazine holder?

The width of the magazine holder is 10" wide. Any book, magazine or digital device that is wider than 10" can be supported.

Ask Your Pre-Purchase Question!

Do you have a question about this machine before purchasing it? Please ask it below and a sales representative will respond as soon as possible!

Have a question before you buy?



Our friendly support staff is here to answer your questions.

Available Monday – Friday from 9:00 a.m. to 5:00 p.m. MST.

510Sr REVIEWS

Rating Snapshot

4.8Based on 27 reviews
586%
412%
34%
20%
10%
Write a Review
Thank you for taking the time to write a review. Please fill out and submit the form below.

By: Dennis Van Gelder  |  22 days ago

Verified Review for 510Sr Recumbent Magnetic Exercise Bike

love it

Yes, I recommend this product.
Verified Purchase

By: Joyce Duncan  |  4 months ago

Verified Review for 510Sr Recumbent Magnetic Exercise Bike

Bought this bike for my husband & he loves it. He raves about the bike, and to my surprise he uses it 2 sometimes 3x a day.

Yes, I recommend this product.
Verified Purchase

By: Hopkins  |  4 months ago

Recumbent 510sr

Great RECUMBENT bike for limited exercise for back problems. Your breathing is louder than the Diamondback Recumbent Bike. That's how quiet it the Diamondback Recumbent Bike is. Testing ongoing, built to last more mileage hours needed.

Yes, I recommend this product.

By: Kathy Tieu  |  8 months ago

Verified Review for 510Sr Recumbent Magnetic Exercise Bike

Great bike

Yes, I recommend this product.
Verified Purchase

By: Frances Brannon  |  about 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

It is just the thing we needed for my elderly mother to get some exercise at home. We especially liked the adjustable horizontal bars in front of display (do not block) for support when getting on and off. Ordering was easy. Directions to put together easy to follow, though needed a couple of modifications to a couple of order of operations. Helpful to have a moving dolly available to get from truck to final location. Very pleased with product

Yes, I recommend this product.
Verified Purchase

By: Gerald Wold  |  about 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

Excellent quality; all parts fit well. Assembly was smooth and takes about 2 hours from unpacking to finish.

Yes, I recommend this product.
Verified Purchase

By: Jeff Botsford  |  about 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

Solid unit and appears to be built to last. 2 hour plus assembly was not what I expected but all the parts and tools were supplied to put together.

Yes, I recommend this product.
Verified Purchase

By: Russell Calvert  |  about 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

Excellent! No problem with assembly. Exactly what I expected.

Yes, I recommend this product.
Verified Purchase

By: Gary Durand  |  about 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

Tough to rate did not receive equipment yet

Yes, I recommend this product.
Verified Purchase

By: Maryanne Bryer  |  about 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

Easy to assemble and use. Smooth ride

Yes, I recommend this product.
Verified Purchase

By: Robert Verga  |  about 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

great product...arrived promptly,,,packed well...only criticism...don't like handle bars

Yes, I recommend this product.
Verified Purchase

By: George Mattiuzzi  |  about 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

It gets ridden every day. What more can you say!

Yes, I recommend this product.
Verified Purchase

By: Amanda Wiley  |  about 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

I like it except for the seat isn't solid but moves as I bike. Also the monitor for the heartbeat doesn't always work

Yes, I recommend this product.
Verified Purchase

By: E Rosenberg  |  about 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

Solid and very comfortable bike. Permits us to work out as intensely as we choose.

Yes, I recommend this product.
Verified Purchase

By: Keith Kuschel  |  about 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

Comfortable and fun to ride. I like that I can monitor my heart rate and distance. Very quiet and smooth pedaling.. I would purchase again and recommend this Recumbent Bike to anyone looking for a good exercise bike.

Yes, I recommend this product.
Verified Purchase

By: William Eckert  |  about 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

Having exercise equipment at home is a convenient way to help stay in shape, As part of my equipment line-up, I bought a DimondBack 510Sr Recumbent exercise bike about a year ago. I would give it a 2 thumbs up...very nice.

Yes, I recommend this product.
Verified Purchase

By: Steve Johnson  |  over 1 year ago

Mr.

Purchased my 510Sr November 2016. Easy assembly, seven months of 3-5 days a week use and we are very pleased. This compares favorably with the commercial equipment I used at various health clubs over the years and is far better than previous systems purchased for home use. System is very quiet, programs meet our needs, and system has a footprint that fits the space. To date we have experienced no operation issues and expect years of enjoyment.

Yes, I recommend this product.

By: Kevin Nichols  |  over 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

Excellent great for my bad lower back

Yes, I recommend this product.
Verified Purchase

By: Paul Burke  |  over 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

Excellent product. Am very pleased!

Yes, I recommend this product.
Verified Purchase

By: Judith Berne  |  over 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

It took my husband a couple of days to put it together. It was worth it. I use is all the time and it was particularly helpful in building up my legs before and after knee replacement surgery.

Yes, I recommend this product.
Verified Purchase

By: Robert Burton  |  over 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

It is very nice. Works great but it has only been 3 monts

Yes, I recommend this product.
Verified Purchase

By: Stephen Johnson  |  over 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

Excellent product, went together easily, has been used since assembly and not one complaint.

Yes, I recommend this product.
Verified Purchase

By: Robert Smith  |  over 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

Overall this is a pretty good value for a comfort exercise bike. It is very quiet and feels well made. Overall I am happy with the purchase.

Yes, I recommend this product.
Verified Purchase

By: Carolyn Jones  |  over 1 year ago

Verified Review for 510Sr Recumbent Exercise Bike

comfortable. easy to use. I look forward to my rides.

Yes, I recommend this product.
Verified Purchase

By: Dr. Park  |  about 3 years ago

Best we have owned

Excellent from order to delivery to set up and daily use. We recommend it by Brand and model to our patients in our Internal Medicine practice. Pros: Smooth and troublefree so far

Yes, I recommend this product.
Verified Purchase

By: Sean  |  about 3 years ago

Great bike

I've had this bike for 18 months. My wife and I use it a combined 6-7 times per week. It's an excellent bike, the work-outs are comparable to the ones we had/have at our gym but at our house. Very reliable, really thrilled we purchased it. It saves us a ton of time when we are trying to get week-day AM work-outs in before getting to work as it's impossible to juggle that with work and kids, etc. I highly recommend it. Pros: Sturdy, reliable, commercial quality

Yes, I recommend this product.
Verified Purchase

By: Tony  |  about 3 years ago

great bike

Highly recommend, had great experience with first Diamondback, 14 years and gave it to charity, this bike is even better, very solid, like pro machine. Pros: had a Daimondback upright for 14 years, used it almost every day, this recumbent is even better, very solid, like a professional machine. Easy to use, preprogram profiles/workouts.

Yes, I recommend this product.
Verified Purchase

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510Sr Recumbent Magnetic Exercise Bike Black Friday Sale: $599.00