The new JK 504 indoor bike was created to confirm the entry-level JK home fitness offering by improving performance compared to the previous range, with decidedly more modern and sporty connotations thanks to the new matt cement grey / black matt look, decidedly trendy on the market.

Technical features
The new JK 504 is a traditional spin bike with a mechanical pad brake and a fixed gear transmission with a silenced belt. It features an inertial system with an 18 kg flywheel mass (balanced flywheel) and a 17 cm crank, which generate good pedaling fluidity at all speeds. The effort is adjusted via a control with a manual selector with “millimetric” resistance that also acts as an emergency brake in the event of sudden pedaling stops by the user. The new JK 504 spin bike has a saddle height adjustment of 7 positions (leg measurement from 72 cm to 90 cm) and 7 cm depth, the handlebars can be adjusted in height to 5 positions and are covered in soft non-slip rubber; these adjustments are used to find the best posture in the saddle for the user. The racing design saddle, anatomical and with a central hole, helps and improves the feeling on board for all users, ensuring comfortable and long pedaling without discomfort. The non-slip iron racing pedal with foot strap helps maintain the correct support of the shoe in all phases of pedaling, even the most intense ones.

Training Tracking
The JK 504 gym bike is equipped with a cycle computer with multi-information LCD display and is also combined with a mobile phone / tablet holder and allows you to monitor all training parameters in real time, such as: time, distance, speed, RPM, calories and heart rate.

Practicality and comfort
The sturdy steel frame of the JK 504 features large stabilizers with four non-slip feet (self-leveling rear) and guarantees a maximum user weight of 120 kg, while at the front there are two transport wheels, which facilitate the movement of the spin bike from one room to another. The new JK 504 is a spinning bike that weighs 33 kg and is compact 107 x 51 cm H 125 cm; suitable for those who want good performance while taking care of the concrete in a small space. JK Fitness offers the best spin bikes on the market with a perfect quality/price ratio.

TECHNICAL FEATURES
Mechanical resistance (buffer)
Manual adjustment
Micrometric / infinite resistance levels
Flywheel mass 18 kg
Max user weight 120 kg
Silent belt drive
3-piece bottom bracket
Crank length 17 cm chrome
Iron structure pedal with toe strap
Q factor 184 mm (LH 91 mm DX 93 mm)
Ratio 1 to 4.25
Fixed Gear
Brake pressure knob
Multi-information cyclocomputer console 1 display
Displayed data time, distance, speed, RPM, calories, heart rate
No programs
Ergonomic multi-grip handlebar, rubber coating, Ø 34 mm
Built-in 5.3KHz HRC receiver
Optional heart rate monitor
Integrated sensors no
Compatible apps no
Cell phone holder Yes (tablet & smartphone)
Product dimensions 107 x 51 cm H 125 cm
Pedal saddle height 72 / 90 cm
Saddle-handlebar distance 41.5 / 49 cm
Anatomical saddle, with central hole
Saddle height adjustment with 7-hole selector, micrometric depth 7 cm
Handlebar height adjustment with 6-hole selector
Stabilizers with 2 rear self-leveling feet
Transport wheels Yes
Packaging dimensions 97 x 19 x 76 cm
Product weight 33 kg
Gross weight 36 kg
Product class HC
CE, RoHS, EN957 certifications



barcode: 8031906205048
code: JK504