Item Condition: New
Hydra Fitness Exchange Pull Pin 58MM Indoor Cycle Knob Pop Pin M16 Thread for Stationary Bike Resistance Adjustment Replacement Part
"Have fitness repair parts to Sell?"
Use our wizard and list them for FREE on our exchange
OR
Sell them lot to us using this form
If so, have your model/serial number from your frame ready and click here.
Item Description
Item Condition: New
Indoor Cycle Pull Pin / Pop Pin – Black, Yellow, or Red Adjustment Knob
M16 × 1.5 Thread | Available in 18mm, 20mm, 25mm & 27mm Pin Lengths
This M16 × 1.5 indoor cycle pull pin is designed for seat and handlebar adjustment systems found on commercial spin bikes, indoor cycles, and exercise bikes. The spring-loaded locking pin allows riders to quickly adjust seat height, handlebar height, and fore/aft positions while maintaining secure engagement during workouts.
Available in Black, Yellow, or Red knob options, this replacement pull pin is ideal for fitness centers, cycling studios, hotels, apartment gyms, and home exercise bikes. Multiple pin lengths are available to fit a wide variety of indoor cycle adjustment systems.
🎨 Available Colors
- Black
- Yellow
- Red
📐 Available Sizes
| Size Option | Thread Size | Pin Diameter | Pin Length |
|---|---|---|---|
| 18mm | M16 × 1.5 | 8mm (5/16") | 18mm (0.71") |
| 20mm | M16 × 1.5 | 8mm (5/16") | 20mm (0.79") |
| 25mm | M16 × 1.5 | 8mm (5/16") | 25mm (0.98") |
| 27mm | M16 × 1.5 | 8mm (5/16") | 27mm (1.06") |
Common Dimensions
- Knob Diameter: 58mm (2.28")
- Thread Size: M16 × 1.5 Fine Pitch
- Pin Diameter: 8mm (5/16")
- Available Colors: Black, Yellow, Red
🚴 Compatible Indoor Cycle Brands
Commonly found on select models from:
- Schwinn IC Series
- Star Trac Spinner Series
- Keiser M3 / M3i (verify dimensions)
- Stages Indoor Cycling Bikes
- Spirit Fitness Indoor Cycles
- BH Fitness Indoor Cycles
- SportsArt Indoor Cycles
- Endurance by Body-Solid Cycles
- XTERRA Fitness Bikes
- Diamondback Fitness Bikes
- Sunny Health & Fitness Commercial Models
- Various OEM spin bikes and indoor cycles
🔩 Key Features
Spring-Loaded Pop Pin Design
Provides quick seat and handlebar adjustments while maintaining secure locking engagement.
M16 × 1.5 Fine Thread
Precision-machined thread provides secure installation and smooth operation.
High-Visibility Color Options
Choose Black, Yellow, or Red to match your equipment or improve visibility.
Commercial Grade Construction
Designed for daily use in cycling studios, fitness centers, hotels, and home gyms.
Multiple Length Options
Available in four pin lengths to fit a variety of indoor cycle adjustment systems.
🚴 Common Applications
- Seat height adjustment
- Seat fore/aft positioning
- Handlebar height adjustment
- Handlebar fore/aft positioning
- Indoor cycle frame positioning systems
- Commercial spin bike maintenance and repair
📏 How to Choose the Correct Size
Step 1 – Verify Thread Size
Confirm your bike uses:
M16 × 1.5 Thread
Step 2 – Measure Pin Extension Length
Select:
- 18mm (0.71")
- 20mm (0.79")
- 25mm (0.98")
- 27mm (1.06")
Step 3 – Verify Pin Diameter
Confirm:
8mm (5/16") locking pin diameter
Step 4 – Choose Your Color
Select:
- Black
- Yellow
- Red
✅ Benefits
- Fast seat and handlebar adjustments
- Secure positive locking engagement
- Commercial-grade durability
- Available in multiple colors
- Multiple size options available
- Easy replacement for worn or damaged adjustment pins
⚠️ Important Fitment Information
Please verify:
- M16 × 1.5 thread size
- 8mm (5/16") locking pin diameter
- Required pin length (18mm, 20mm, 25mm, or 27mm)
Many indoor cycles use similar adjustment knobs, but exact dimensions are required for proper fit and safe operation.
💡 Why It Matters
A properly functioning adjustment pin is critical for rider comfort, bike stability, and workout safety. Secure seat and handlebar positioning improves performance while reducing wear on adjustment mechanisms.
Let customers speak for us
from 1242 reviewsOrdered a part from Hydra Fitness Parts because the OEM part was back ordered for months. Part came in just a couple of days and had it installed by my service tech shortly after. My cross trainer works like new again. Definitely recommend.
Works great perfect fit would buy again
I moved my treadmill from one room to another. I happened to break off a rear foot to it during a difficult spot. It has been like this for 2 years. I decided to look for the part, it was hard to find. But then I found it and jow my treadmill is back together and ready to use
Ordered a part for our treadmill that got lost during a move. Perfect fit! Quick and easy shipping. Would highly recommend if you are looking for odd parts for your Horizon treadmill.
Hydra fit had the part I needed to repair my Bowflex treadmill for only $150. Bowflex techs were telling me I needed a new monitor control for $2,000 but I knew that was wrong because there was no electrical supply to the monitor so it couldn’t be that! Hydrogen gave me a couple ideas I I figured it out. NO thanks Bowflex, and thanks hydro fit.
Used power rods appear to be in good shape and delivery time was very good.
Parts no longer made from my treadmill. Hydra Fitness Exchange had a front roller that works great! Quiet, smooth, almost like new again! Timely shipping, good packaging, helpful website. Thanks!
Product fits perfect. Was able to verify that it would fit my model, and it arrived in a timely fashion. I would order from you guys in the future.
Spirit XE200 elliptical. Common problem of the wheels jumping off and galling the aluminum track rail covers. By the time I fixed the problem, my original track rail covers were too damaged. These were inexpensive and appear to be OEM. Only two bolts to swap them out. Excellent!
Ordered replacement part for my eliptical machine and fit tightly into place and the machine is working fine.
Upon receipt of the item, it would not charge. In working with them I was told to give charging one last shot. This time I pressed the start button multiple times and it started to charge. It synched with my bike. I thanked them for their patience in working out the problem.
The website was easy to use and the product arrived when promised.
We’ve been looking for this part for about 7 years. It fits perfectly. Shipping time was excellent.
Thank you so much!
Product was received on time and fit the description as advertised.
Great value for the price.
