The current stock J105 Outhaul System offers a 6:1 Outhaul purchase system. Since this system often does not provide enough purchase in heavy air, the J105 Class amended the rules in 2008 to allow for a more powerful 12:1 purchase system on all boats.
Our J105 Outhaul Upgrade Kit gives you all necessary line, blocks and shackles needed to make a smooth transition to the new 12:1 Outhaul system. This upgrade reuses your existing blocks and adds a 2:1 cascade to give you the effective of 12:1 purchase.
The 5/32 in. 7x19 wire for the outhaul's primary is replaced with 5/32 in. Yale Ultrex (SK-75 Dyneema) which is lighter and stronger than its wire counterpart. It has a cover added where it exits the end of the boom to protect it against chafe.
The clew shackle has a captive pin so it will not be lost. The 2:1 cascade is shackled to the inboard end of the boom next to the existing block from the 6:1. Then run through the Harken block (included) and dead ended to your existing triple block.