In a new development for 2006, Buell introduces a new transmission design. The transmission offers improved shift quality, reduced noise, and extended service intervals. Normal gears have been replaced by thin steel ""dog rings"" that slide to affect gear changes, a system more commonly seen in automotive race transmissions. The light dog rings provide faster shifting, while the new helical-cut gears are smoother and quieter than straight-cut gears. Less clutch effort is needed for movement between gears. Service intervals between oil changes has been extended to 10,000 miles, and the Goodyear Hibrex drive belt, which requires no service or replacement, means the rider will be able to enjoy more time on the road, and less time doing maintenance or repairs.