MCS
Inner primary cover. Cast
Inner primary cover. Cast
Impossible de charger la disponibilité du service de retrait
Natural cast finish. OEM style replacement aluminum inner primary cover with OEM style machining and the OEM style cast finish. 9-hole but will fit both 8-hole and 9-hole outer primary covers. Reinforced and stronger than the original. Complete with mainshaft support bearing. Complete as shown. OEM replacement reference 60421-79A. Note: 1/2-20 drain plug; available as 502450; 502105 or 989296; must be ordered separately when requiredNote: Check clearance on transmission cast boss; where 4 studs mount. Inner primary may have to be clearanced for proper fitment. Note: Comes with the mainshaft support bearing and seal installed. Note: Sand cast for strength.
Share
Why buy from Forty5°
-
Verified compatibility
Every part we ship is checked against your bike's platform, year, and engine. If it doesn't fit, we tell you before you check out.
-
Workshop installation
Book a serviceHave us fit it. Book installation at parts intake — same-day on most jobs, master techs only.
-
Founder-led aftersales
Get in touchQuestions after fitment? You'll speak to the people who installed it. We answer email and WhatsApp seven days a week.