








Harken 40mm Carbo Block
Lightweight, low-friction Harken Carbo 40mm blocks offering very high working loads for mainsheet, jib and control lines.
Out of stock Out of stock
$42.95 - $86.95
$42.95 $48.65
$86.95 $98.85
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Available Quantity
2 GSA Item
No GSA Compliant
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3 GSA Item
No GSA Compliant
Yes Product Details
Harken 40mm Carbo blocks provide lightweight, low-friction performance for sailing rigging. Built with carbon fiber components, these compact blocks offer very high working loads and reliable trimming across mainsheet, jib sheets, mainsheet fine-tune, control lines, vangs, cunninghams and outhauls. Designed as companions to the popular Harken Black Magic line, they combine strong construction with smooth, low-friction sheaves for safe, easy trimming in a variety of rigging applications.
- Designed for use with Main/jib sheets, Mainsheet fine-tune, Control lines, Vangs, Cunninghams, Outhauls
- Patented switch locks shackle in front or side positions, or lets block swivel to keep line from twisting
- Ball bearings, sheave, and side plates are UV stabilized with carbon black for maximum protection
- Enable safe and easy sail trimming and are 30% lighter, with a 60% higher working load, than Classic blocks
- Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable
Specifications:
| Materials & Construction | |
| Outer Material | Carbon Fiber |
| Product Details | |
| Included Components | Great Product |
| Model Name | 2638 |
| Number of Items | 1 |
| Style | Double |
| Warranty | Warranty |
| Sizing & Dimensions | |
| Weight | 3.2 ounces |
| Technical Specifications | |
| Maximum working load (kg) | 440 kg |
| Maximum working load (lb) | 970 lb |
| Warranty | Warranty |
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