This is a Seat pop pin fits most indoor bikes with the same size.The size of knob: 2.28" (58mm).The thread of pin: 5 8"(M16) fine thread.Pin length of thread: 0.71" (18mm) Tip of pin diameter: 5 16" (8mm) (New)

Description

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.
 

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