Triumph TRW Registers TRW 22207hp December 4, 2015December 4, 2015 Kerry 0 Comment Triumph TRW 1952 in Upper Stondon,United Kingdom Engine Number TRW 22207hp Bike Details registered in 1952 in england but no history known. original registered as mlm487sold and replaced with ysj475 Located in Upper Stondon,United Kingdom