Dual Arm Mainsheet Jammer

Dual Arm Standard Height Mainsheet Jammer

Designed for dinghies and keelboats that require centralised control of both the mainsheet and an additional control line, this Dual Arm Standard Height Mainsheet Jammer keeps essential controls within easy reach of the mainsheet trimmer. The dual arm configuration allows efficient adjustment of both lines from a central position, improving handling and cockpit organisation.

Built around Allen's cold-forged bearing system, the jammer delivers smooth rotation while preventing lateral arm movement. The main arm is fitted with a medium aluminium ball bearing cam cleat with Mega Pro-Lead, while the lower arm features a small aluminium ball bearing cam cleat with Mega Pro-Lead and integrated sheaves for clean, efficient rope routing.

Key Features:

• Standard height dual arm mainsheet jammer
• Designed for mainsheet and secondary control lines such as vangs
• Cold-forged bearing system for smooth rotation
• Ball-locating groove reduces lateral arm movement
• Adjustable rotation settings of 180°, 220°, or 360°
• Optimised arm angles for easy cleating and uncleating
• Medium aluminium ball bearing cam cleat with Mega Pro-Lead on the main arm
• Small aluminium ball bearing cam cleat with Mega Pro-Lead on the lower arm
• Twin sheaves on the lower arm for efficient rope guidance
• Available with or without a 60mm Pro-Ratchet Block
• Ideal for racing and performance sailing applications