Universal Parts #428H Chain Offset Link / Half-Link
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#428H Heavy-Duty Offset Link
Achieve the ideal chain slack with the Universal Parts #428H Offset Link (also known as a "half-link"). This specialized drivetrain component is the ultimate problem-solver for custom builds and frame stretches where a standard link removal makes the chain too short, but a full link makes it too loose. Engineered for high-stress applications, this link allows you to adjust your wheelbase by a half-pitch (approx. 6.35mm), ensuring smooth power delivery and reduced wear on your sprockets.
Technical Performance Features
- High-Tensile Strength: Boasts an ultimate tensile strength of 20.60 kN (4,682 lbs), making it fully compatible with "H" (Heavy Duty) series chains used on performance mini-bikes and small motorcycles.
- Precision 428H Geometry: Features a standard 12.70mm pitch and 8.51mm roller diameter, ensuring a seamless interface with any 428-series drive system.
- Reinforced Plate Thickness: At 2.03mm thick, these plates match the durability of your primary drive chain, preventing the "stretching" common with inferior, non-H-rated links.
- Universal Drivetrain Compatibility: The go-to solution for Pocket Bikes, ATVs, Dirt Bikes, and custom motorized bicycles requiring a 428-pitch setup.
Comprehensive Fitment Guide
This offset link is compatible with any #428 or #428H roller chain. It is a vital maintenance item for:
| Vehicle Category | Typical Use Case |
|---|---|
| Pocket Bikes & Pit Bikes | Adjusting tension after sprocket swaps or engine moves |
| ATVs & Dirt Bikes | 50cc - 150cc models using 428-series drive systems |
| Custom Motorcycles | Fine-tuning rear wheel alignment and chain slack |
Technical Specifications
- Chain Size: #428H (Heavy Duty)
- Pitch: 12.70mm
- Roller Diameter: 8.51mm
- Pin Diameter: 4.45mm
- Ultimate Tensile Strength: 4,682 lbs
Mechanic's Note: An offset link is used when your chain adjusters are at their limit. Pro Tip: Chain links are under extreme tension; always ensure the cotter pin or clip is fully seated. For maximum chain life, pair this link with a fresh application of High-Tack Chain Lube to prevent heat buildup and O-ring wear.
SKU: 115-48
MPN: 428H O/L
Vendor: Universal Parts
- Pitch: 12.70mm
- Roller Diameter: 8.51mm
- Width Between Inner Plates: 7.85mm
- Pin Diameter: 4.45mm
- Pin Length: (L) 18.80mm (LC) 19.9mm
- Inner Plate Depth: 11.80mm
- Plate Thickness: 2.03mm
- Ultimate Tensile Strength: 20.60/4682 kN/LB
- Average Tensile Strength: 23.4 kN
- Weight per meter: 0.79 kg/m
Shipping information
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Returns & warranty
Please verify fitment and part number before ordering. Contact Thrifty Scooters promptly if an item arrives damaged or incorrect.