The essence of skateboarding lies in its freedom of expression and personal style, yet the board's handling characteristics significantly impact a rider's experience. Have you ever wondered why identical skateboards perform differently under various riders? The answer often lies in seemingly insignificant components—truck bushings.
These small polyurethane rings function as the skateboard's "nervous system," determining turning responsiveness, stability, and overall ride quality. This comprehensive guide examines all aspects of skateboard truck bushings to help riders select optimal configurations for enhanced control and smoother performance.
I. Understanding Skateboard Truck Bushings
Skateboard truck bushings (also called pivot cups or cushion rings) are polyurethane components installed around the kingpin of skateboard trucks. Each truck typically uses two bushings (four total per board), serving three primary functions:
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Steering Assistance:
Bushings enable board tilting and rotation for turning maneuvers.
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Shock Absorption:
They dampen ground vibrations for improved ride comfort.
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Responsiveness Adjustment:
Different bushing configurations modify turning sensitivity and stability.
The upper bushing (between hanger and kingpin nut) primarily influences turning smoothness, while the lower bushing (between hanger and baseplate) controls response speed through tension adjustment. Harder bushings provide stability for technical tricks, while softer options favor cruising with more fluid turns.
II. Bushing Hardness: The Durometer Scale
Bushing hardness—measured in Durometer—fundamentally affects performance characteristics. The skate industry primarily uses two measurement scales:
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A-Scale:
Standard measurement (1A-100A) for most skate bushings
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B-Scale:
Used for harder compounds (80B ≈ 100A)
Selection considerations include:
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Rider Weight:
Heavier riders typically require firmer bushings for adequate support
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Riding Style:
Speed/stability needs versus maneuverability preferences
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Personal Preference:
Subjective responsiveness preferences
Common hardness ranges and applications:
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78A-85A:
Extra soft - Ideal for lightweight riders, beginners, or maximum turn flexibility (cruising/longboarding)
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86A-92A:
Soft - Versatile option for most riders (street/park skating)
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93A-97A:
Medium - Balanced stability/responsiveness (technical tricks)
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98A-100A:
Hard - Maximum stability (downhill/speed applications)
III. Bushing Shapes: Performance Characteristics
1. Conical Bushings
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Profile:
Narrow top, wide base (cone-shaped)
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Advantages:
Maximum lean angle, fluid turning
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Disadvantages:
Reduced high-speed stability
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Best For:
Street skating, bowl riding
2. Barrel Bushings
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Profile:
Uniform cylindrical shape
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Advantages:
Linear response, stable platform
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Disadvantages:
Restricted lean angle
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Best For:
Park skating, technical tricks
3. Eliminator Bushings
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Profile:
Hybrid design with flat top surface
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Advantages:
Extreme stability with moderate turn capability
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Disadvantages:
Reduced maneuverability
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Best For:
Downhill skating, heavy riders
IV. Custom Bushing Combinations
Experienced riders often mix bushing types for personalized setups:
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Barrel/Conical:
Most common (stability + responsiveness)
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Double Barrel:
Maximum stability (downhill)
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Double Conical:
Extreme maneuverability (technical street)
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Barrel/Stepped:
Enhanced energy return (vert skating)
V. Supporting Components
Washers and bushing seats further refine performance:
Washer Types
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Flat Washers:
Allow maximum bushing compression (responsive turns)
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Cupped Washers:
Limit compression (stable turns)
Bushing Seat Designs
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Open Seats:
Minimal bushing restriction (responsive)
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Restrictive Seats:
Deep recesses (stable)
VI. Maintenance & Replacement
Bushings degrade over time and require periodic inspection for:
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Cracks or deformation
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Excessive hardening
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Irregular compression patterns
Replacement involves:
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Loosening kingpin nuts
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Removing old components
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Installing new bushings/washers
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Adjusting tension to preference
VII. Conclusion
Optimizing truck bushings requires consideration of multiple variables—rider physiology, skating discipline, and personal handling preferences. Through systematic experimentation with hardness grades, shapes, and complementary components, skaters can achieve precisely tuned setups that enhance control and riding enjoyment. This technical foundation empowers riders to make informed equipment choices while encouraging continued exploration of personalized configurations.