*This is a one only clearance item. One end of the camshaft has a blemish – see photos.
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The 70-9989 exhaust camshaft part number was designated for the 1970-1972 Triumph 650 models, but it’s E3134 profile was also applied to various earlier part numbers, among them E5047 and E10041.
The current version of the 70-9989 exhaust camshaft features a nitride finish to minimize wear and is forged from a solid blank. 70-8801 R-radius cam followers are suggested for use with the “Q” camshaft profile to maximize the mid-range engine performance that this camshaft is known for. This camshaft is often paired with the 70-3134 inlet camshaft to provide great mid-range power from the B-range engines, including the later 750 engines From LF Harris in the UK.
