Is this machine plate loaded or selectorized?

This machine is plate loaded. You can use your own Olympic plates for smooth resistance and progressive overload.

Will this leg extension & curl machine fit in a home gym?

Yes. With a compact 45” × 45” × 45” footprint and transport wheels, it’s built to fit residential spaces like garages, basements, or dedicated training rooms.

What muscles does this machine train?

Leg extensions isolate the quadriceps, while seated leg curls target the hamstrings. Together they provide a complete lower-body workout.

How do you use the dual function design?

For leg extensions, place ankles under the rollers and extend to train the quads. For seated leg curls, adjust the pads and curl the roller back to hit hamstrings. Switching exercises takes just seconds.

What is the maximum load capacity?

The 10” Olympic sleeve holds up to four 45 lb plates for a total of about 180 lbs of resistance.

Spirit Fitness

Spirit CT800 Treadmill | Black

Name: Spirit CT800 Treadmill | Black
Brand: Gronk Fitness
SKU: 800825
Price: 3999.00 USD
Availability: InStock

800825

$ 4,999.00

$ 3,999.00

{ "id":10350347157813, "title":"Spirit CT800 Treadmill | Black","handle":"spirit-ct800-treadmill-commercial-copy", "description":"\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\u003cul\u003e\n\u003cli\u003eEasy-to-read bright white multi-window LED console\u003c\/li\u003e\n\u003cli\u003eDirect speed and incline buttons save time\u003c\/li\u003e\n\u003cli\u003eContact and wireless heart rate options (chest strap sold separately)\u003c\/li\u003e\n\u003cli\u003eMaintenance-free deck system provides hassle-free use\u003c\/li\u003e\n\u003cli\u003eSpacious 22\" x 60\" multi-ply commercial belt\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe CT800 commercial treadmill has a reputation for reliability and value that meets your space and budget needs. Weighing in at 380 lb and backed by an impressive warranty, this machine is truly heavy-duty and packs a load of premium features that keep clients happy. The top control panel boasts a simple and intuitive design with direct speed and incline buttons, multiple storage options for water bottles, phones, and other accessories, as well as a built-in fan that helps keep users cool. The ergonomically positioned hand pulse sensors let users easily monitor vital stats, while a variety of built-in programs allow nearly endless workout customization to suit a wide range of fitness levels. \u003cbr\u003e\u003cbr\u003eAs with any product, a major importance is the user interface. The electronics in the CT800 are designed to provide simple and intuitive operation. The console features a large, easy-to-read display with a variety of program options for users of all fitness levels, an integrated fan to keep clients cool, and a USB port to help keep personal devices charged. The addition of direct speed and incline buttons make all workouts more efficient and interval training workouts a breeze.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ch3\u003eBUILT-IN CONVENIENCE\u003c\/h3\u003e\n\u003cp\u003eConsole features an adjustable fan, cell phone ledge, small storage tray, tablet-friendly reading rack, bottle holders, USB charging port and more.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ch3\u003ePOWER\u003c\/h3\u003e\n\u003cp\u003ePowerful 4.0 HP DC motor with Grade H insulation, 12mph top speed, and 15 levels of incline for ultimate workout versatility.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ch3\u003eHEART RATE MONITORING\u003c\/h3\u003e\n\u003cp\u003eWireless heart rate transmitter (chest strap sold separately) and ergonomically correct hand pulse sensors help keep your workouts safe and effective.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ch3\u003eEFFICIENT DISPLAY\u003c\/h3\u003e\n\u003cp\u003eWhite multi-window LED conveniently displays 9 pieces of data at a time to keep you informed and motivated, while direct access buttons allow you to quickly adjust your speed and incline during your workout.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ch3\u003eMAINTENANCE-FREE DECK\u003c\/h3\u003e\n\u003cp\u003eDurable commercial-grade pre-lubricated belt for enhanced comfort and extensive use, plus the spacious 22” x 60” workout area accommodates users of all heights.\u003c\/p\u003e\n\u003ch3\u003eBLUETOOTH CONNECTIVITY\u003c\/h3\u003e\n\u003cp\u003eBuilt-in Bluetooth FTMS Connects to Third Party Apps.\u003c\/p\u003e\n\u003ch3\u003eX-TENDED HANDRAILS AVAILABLE\u003c\/h3\u003e\n\u003cp\u003eUsing handrails during your workout can improve body balance and ensure proper gait, as well as provides additional security while getting on and off the treadmill for users with limited mobility. With the optional extended handrail attachments (sold separately), you'll have extra support where you need it most.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003ch2\u003eSPECIFICATIONS\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003ePERFORMANCE\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003ePower: AC 120V\/20A or AC 230V\/15A Cord\/Outlet\u003c\/li\u003e\n\u003cli\u003eMotor: 4.0 HP\u003c\/li\u003e\n\u003cli\u003eRollers: 3\"\u003c\/li\u003e\n\u003cli\u003e0.5 - 12 mph (0.1 mph increments) Speed Range\u003c\/li\u003e\n\u003cli\u003e0 - 15 (0.5 increments) Levels of Electronic Incline\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eCONSOLE\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eDisplay: 4 White LED Windows\u003c\/li\u003e\n\u003cli\u003eFeedback: Speed, Incline, Distance, Pace, Calories, METS, Pulse, Watts, Time Elapsed, Time Remaining\u003c\/li\u003e\n\u003cli\u003ePrograms: Manual, Hill, Fat burn, Cardio, Interval, 2 Heart Rate, Custom, HIIT, 5K, 10K, Fitness Tests (Gerkin, Army, Navy, AirForce, Marines corps, Coast Guard, PEB)\u003c\/li\u003e\n\u003cli\u003eBluetooth 4.0 (FTMS)\u003c\/li\u003e\n\u003cli\u003eUSB Charging Port\u003c\/li\u003e\n\u003cli\u003eCSAFE\u003c\/li\u003e\n\u003cli\u003eDirect Speed Buttons: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 mph\u003c\/li\u003e\n\u003cli\u003eDirect Incline Buttons: 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 15 incline\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eFRAME\/DECK\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eBelt: 2-Ply, Pre-Lubed (4,000 Hours)\u003c\/li\u003e\n\u003cli\u003eStep-Up Height: 7.87\"\u003c\/li\u003e\n\u003cli\u003eRunning Surface: 22\" x 60\"\u003c\/li\u003e\n\u003cli\u003eRunning Deck Thickness: 1\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eCONVENIENCE\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eHandlebar Controls\u003c\/li\u003e\n\u003cli\u003eHand Pulse Sensors\u003c\/li\u003e\n\u003cli\u003eHeart Rate Receiver\/Transmitter\u003c\/li\u003e\n\u003cli\u003eCooling Fan\u003c\/li\u003e\n\u003cli\u003eAccessory Tray\u003c\/li\u003e\n\u003cli\u003eCup Holder\u003c\/li\u003e\n\u003cli\u003eTransportation Wheels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eDIMENSIONS\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eSet-Up Dimension: 85” L x 35.8” W x 60.6” H\u003c\/li\u003e\n\u003cli\u003eShipping Dimension: 88.6” L x 37.7” W x 21.3” H\u003c\/li\u003e\n\u003cli\u003eItem Weight: 380 lb\u003c\/li\u003e\n\u003cli\u003eShipping Weight: 423 lb\u003c\/li\u003e\n\u003cli\u003eMax User Weight Capacity: 450 lb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eWARRANTY\u003c\/div\u003e\n\u003cstrong\u003eUS Residential Warranty\u003c\/strong\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eLifetime Frame\u003c\/li\u003e\n\u003cli\u003eLifetime Motor\u003c\/li\u003e\n\u003cli\u003eLifetime Deck\u003c\/li\u003e\n\u003cli\u003e10 Years Parts\u003c\/li\u003e\n\u003cli\u003e2 Years Labor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cstrong\u003eUS Light Commercial Warranty\u003c\/strong\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eLifetime Frame\u003c\/li\u003e\n\u003cli\u003e5 Years Motor\u003c\/li\u003e\n\u003cli\u003e5 Years Deck\u003c\/li\u003e\n\u003cli\u003e5 Years Parts\u003c\/li\u003e\n\u003cli\u003e2 Years Labor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e*Prisons and correctional facilities are excluded from warranty coverage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e", "published_at":"2025-12-08T10:43:22", "created_at":"2025-12-08T10:15:53", "vendor":"Spirit Fitness", "type":"Treadmills", "tags":["Cardio","Commercial","Spirit","Treadmill"], "price":399900, "price_min":399900, "price_max":399900, "price_varies":false, "compare_at_price":499900, "compare_at_price_min":499900, "compare_at_price_max":499900, "compare_at_price_varies":false, "all_variant_ids":[52038803423541], "variants":[{ "id":52038803423541, "product_id":10350347157813, "product_handle":"spirit-ct800-treadmill-commercial-copy", "title":"Default Title", "option1":"Default Title", "option2":null, "option3":null, "sku":"800825", "requires_shipping":true, "taxable":true, "featured_image":null,"image_id":null, "available":true, "name":"Spirit CT800 Treadmill | Black - Default Title", "options":["Default Title"], "price":399900, "weight":0, "compare_at_price":499900, "inventory_quantity":5, "inventory_management":"shopify", "inventory_policy":"deny", "inventory_in_cart":0, "inventory_remaining":5, "incoming":null, "next_incoming_date":null, "taxable":true, "barcode":null}], "available":true,"images":["\/\/www.gronkfitnessproducts.com\/cdn\/shop\/files\/ct850-black1final.webp?v=1765208500","\/\/www.gronkfitnessproducts.com\/cdn\/shop\/files\/ct850-black7final.webp?v=1765208500","\/\/www.gronkfitnessproducts.com\/cdn\/shop\/files\/ct850-black9final.webp?v=1765208500","\/\/www.gronkfitnessproducts.com\/cdn\/shop\/files\/ct850-black8final.webp?v=1765208500","\/\/www.gronkfitnessproducts.com\/cdn\/shop\/files\/ct850-black3.1_1.webp?v=1765208500","\/\/www.gronkfitnessproducts.com\/cdn\/shop\/files\/ct850-black3final.webp?v=1765208500","\/\/www.gronkfitnessproducts.com\/cdn\/shop\/files\/ct850-black6final.png?v=1765208500","\/\/www.gronkfitnessproducts.com\/cdn\/shop\/files\/ct850-black4final.webp?v=1765208500","\/\/www.gronkfitnessproducts.com\/cdn\/shop\/files\/ct850-black2final.webp?v=1765208500"],"featured_image":"\/\/www.gronkfitnessproducts.com\/cdn\/shop\/files\/ct850-black1final.webp?v=1765208500", "options":["Title"], "url":"\/products\/spirit-ct800-treadmill-commercial-copy"}

Easy-to-read bright white multi-window LED console
Direct speed and incline buttons save time
Contact and wireless heart rate options (chest strap sold separately)
Maintenance-free deck system provides hassle-free use
Spacious 22" x 60" multi-ply commercial belt

The CT800 commercial treadmill has a reputation for reliability and value that meets your space and budget needs. Weighing in at 380 lb and backed by an impressive warranty, this machine is truly heavy-duty and packs a load of premium features that keep clients happy. The top control panel boasts a simple and intuitive design with direct speed and incline buttons, multiple storage options for water bottles, phones, and other accessories, as well as a built-in fan that helps keep users cool. The ergonomically positioned hand pulse sensors let users easily monitor vital stats, while a variety of built-in programs allow nearly endless workout customization to suit a wide range of fitness levels.

As with any product, a major importance is the user interface. The electronics in the CT800 are designed to provide simple and intuitive operation. The console features a large, easy-to-read display with a variety of program options for users of all fitness levels, an integrated fan to keep clients cool, and a USB port to help keep personal devices charged. The addition of direct speed and incline buttons make all workouts more efficient and interval training workouts a breeze.

BUILT-IN CONVENIENCE

Console features an adjustable fan, cell phone ledge, small storage tray, tablet-friendly reading rack, bottle holders, USB charging port and more.

POWER

Powerful 4.0 HP DC motor with Grade H insulation, 12mph top speed, and 15 levels of incline for ultimate workout versatility.

HEART RATE MONITORING

Wireless heart rate transmitter (chest strap sold separately) and ergonomically correct hand pulse sensors help keep your workouts safe and effective.

EFFICIENT DISPLAY

White multi-window LED conveniently displays 9 pieces of data at a time to keep you informed and motivated, while direct access buttons allow you to quickly adjust your speed and incline during your workout.

MAINTENANCE-FREE DECK

Durable commercial-grade pre-lubricated belt for enhanced comfort and extensive use, plus the spacious 22” x 60” workout area accommodates users of all heights.

BLUETOOTH CONNECTIVITY

Built-in Bluetooth FTMS Connects to Third Party Apps.

X-TENDED HANDRAILS AVAILABLE

Using handrails during your workout can improve body balance and ensure proper gait, as well as provides additional security while getting on and off the treadmill for users with limited mobility. With the optional extended handrail attachments (sold separately), you'll have extra support where you need it most.

SPECIFICATIONS

PERFORMANCE

Power: AC 120V/20A or AC 230V/15A Cord/Outlet
Motor: 4.0 HP
Rollers: 3"
0.5 - 12 mph (0.1 mph increments) Speed Range
0 - 15 (0.5 increments) Levels of Electronic Incline

CONSOLE

Display: 4 White LED Windows
Feedback: Speed, Incline, Distance, Pace, Calories, METS, Pulse, Watts, Time Elapsed, Time Remaining
Programs: Manual, Hill, Fat burn, Cardio, Interval, 2 Heart Rate, Custom, HIIT, 5K, 10K, Fitness Tests (Gerkin, Army, Navy, AirForce, Marines corps, Coast Guard, PEB)
Bluetooth 4.0 (FTMS)
USB Charging Port
CSAFE
Direct Speed Buttons: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 mph
Direct Incline Buttons: 0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 15 incline

FRAME/DECK

Belt: 2-Ply, Pre-Lubed (4,000 Hours)
Step-Up Height: 7.87"
Running Surface: 22" x 60"
Running Deck Thickness: 1"

CONVENIENCE

Handlebar Controls
Hand Pulse Sensors
Heart Rate Receiver/Transmitter
Cooling Fan
Accessory Tray
Cup Holder
Transportation Wheels

DIMENSIONS

Set-Up Dimension: 85” L x 35.8” W x 60.6” H
Shipping Dimension: 88.6” L x 37.7” W x 21.3” H
Item Weight: 380 lb
Shipping Weight: 423 lb
Max User Weight Capacity: 450 lb

WARRANTY

US Residential Warranty

Lifetime Frame
Lifetime Motor
Lifetime Deck
10 Years Parts
2 Years Labor

US Light Commercial Warranty

Lifetime Frame
5 Years Motor
5 Years Deck
5 Years Parts
2 Years Labor

*Prisons and correctional facilities are excluded from warranty coverage.