Shop › 145864 Image 1 of 1 145864 $40.00 Crank shaft timing gear for double row chain. Made in England. TR250-TR6-GT6. 145864, CC56, 837-100. Add To Cart Added! Crank shaft timing gear for double row chain. Made in England. TR250-TR6-GT6. 145864, CC56, 837-100. You Might Also Like 145865 $50.00 107246 $12.00 Redesigned Spin-On Oil Filter Adaptor from $10.00 42425 $25.00 Valve Cover Gaskets from $7.50