Complete assembly ready to bolt on. Select desired rocker ratio.
Installation of high ratio rockers will increase your net valve lift. Check your valve spring capacity before installation. For best cam life, keep valve spring pressures as low as possible but strong enough to avoid valve float.
TR2-4 rockers do not fit under the original rocker cover. An after-market aluminum rocker cover or a Rocker Cover Spacer (SKU 33) is required.