270° crank angle parallel twin, 1200cc.

Triumph-Bonneville-Bobber

Triumph-Bonneville-Bobber

Triumph-Bonneville-Bobber

Triumph-Bonneville-Bobber

Triumph-Bonneville-Bobber

Triumph-Bonneville-Bobber

Triumph-Bonneville-Bobber

Source: Triumph Motorcycles.