Transmission & Drive Train
![PRIMARY DRIVE GASKET & SEAL KITS FOR BIG TWIN](http://rt66cycle.com/cdn/shop/products/0073286_550.JPG_9fb0bf7b-bdbc-45a0-97a0-075e130aabba_{width}x.jpg?v=1614565738)
PRIMARY DRIVE GASKET & SEAL KITS FOR BIG TWIN 78488
$105.20
![PRIMARY DRIVE GASKET & SEAL KITS FOR BIG TWIN](http://rt66cycle.com/cdn/shop/products/0080371_primary-drive-gasket-seal-kits-for-big-twin_550_jpeg_{width}x.jpg?v=1614656786)
PRIMARY DRIVE GASKET & SEAL KITS FOR BIG TWIN 78432
$66.95
![PRIMARY COVER GASKETS FOR BIG TWIN & SPORTSTER](http://rt66cycle.com/cdn/shop/products/0079713_550.JPG_03d2d47a-0c42-4e1c-9bdf-e56d7641cdca_{width}x.jpg?v=1614565722)
PRIMARY COVER GASKETS FOR BIG TWIN & SPORTSTER 78421
$34.75
![PRIMARY COVER PARTS FOR SPORTSTER 1991/LATER](http://rt66cycle.com/cdn/shop/products/0078999_550.JPG_5c7e4d95-4607-48f1-9c73-ec5e3f4b2494_{width}x.jpg?v=1614565719)
PRIMARY COVER PARTS FOR SPORTSTER 1991/LATER 78418
$6.80
![ENGINE CASE LIP REPAIR GASKET FOR BIG TWIN](http://rt66cycle.com/cdn/shop/products/0080370_engine-case-lip-repair-gasket-for-big-twin_550_jpeg_{width}x.jpg?v=1614656785)
ENGINE CASE LIP REPAIR GASKET FOR BIG TWIN 78415
$19.88
![POWER HOUSE PRIMARY/DERBY COVER GASKETS](http://rt66cycle.com/cdn/shop/products/0074157_550.JPG_71282c7e-09b9-414f-889e-5d631029f5f5_{width}x.jpg?v=1614565714)
POWER HOUSE PRIMARY/DERBY COVER GASKETS 78411
$21.65
![PRIMARY COVER GASKETS FOR BIG TWIN & SPORTSTER](http://rt66cycle.com/cdn/shop/products/0082338_primary-cover-gaskets-for-big-twin-sportster_550_png_{width}x.jpg?v=1614655961)
PRIMARY COVER GASKETS FOR BIG TWIN & SPORTSTER 78405
$24.10
![POWER HOUSE PRIMARY/DERBY COVER GASKETS](http://rt66cycle.com/cdn/shop/products/0075052_550.JPG_056f0843-166b-4763-a42d-0a28039d95d0_{width}x.jpg?v=1614565707)
POWER HOUSE PRIMARY/DERBY COVER GASKETS 78403
$4.55
![POWER HOUSE PRIMARY/DERBY COVER GASKETS](http://rt66cycle.com/cdn/shop/products/0075127_550.JPG_afe417d2-307e-4702-8d6f-c7a1e7f0503a_{width}x.jpg?v=1614565705)
POWER HOUSE PRIMARY/DERBY COVER GASKETS 78401
$4.25