Countershaft by Can-Am

Can-Am UTV / ATV and Side by Side Original Equipment Manufacturer OEM Countershafts & Components - Available at buywitchdoctors.com

Product Specifications: Genuine OEM Can-Am Countershaft, Part # 420637499.

When you are slamming through gears, crawling out of rocky ravines, or pinning the throttle down wide-open flats, your vehicle's transmission handles massive torque loads. Protect your gearbox from catastrophic internal failure and maintain smooth power distribution with premium Can-Am UTV/ATV OEM Countershafts & Components. Engineered specifically to interface with your high-output Rotax powertrain, these genuine Original Equipment Manufacturer parts restore the exact gear lash, spline tolerances, and rotational balance your transmission possessed when it rolled off the assembly line. Do not risk throwing a gear, snapping a drive shaft, or cracking your inner transmission case halves by installing unrated, non-hardened aftermarket mimics.

Every genuine Can-Am transmission countershaft, needle bearing, and gear spacer offers unmatched mechanical durability and seamless drivetrain integration. These high-stress final drive components undergo rigorous factory metallurgic stress testing to handle intense shear force and extreme heat cycles without twisting. Whether you are splitting the case to rebuild a hard-working utility vehicle gearbox or repairing the core transmission on a high-speed sport side-by-side, choosing official OEM parts ensures your quad or side-by-side transfers power to the dirt flawlessly under heavy loads.

Why Choose Factory-Direct Can-Am OEM Transmission Countershafts?

Off-road transmissions operate under severe mechanical pressure where heavy mud tires, deep water crossings, and aggressive shifting constantly stress internal splines. Lower-quality aftermarket countershafts often use inferior steel pours that strip, pit, or bend, leading to gear slipping and metal shards flowing through your oil lines. Upgrading or replacing your internal gears with a genuine factory transmission countershaft provides distinct advantages that protect your powertrain longevity.

• Premium Forged Metal Alloys: Carved from high-density, case-hardened steel blocks engineered to resist micro-fracturing, spline wear, and high-load torque twisting.
• Precision-Cut Spline Channels: Features exact manufacturing tolerances to prevent loose rotational slop, minimizing secondary clutch shock and ensuring crisp engagement.
• Micro-Polished Bearing Journals: Precision-ground matching surfaces reduce frictional drag and heat buildup, extending the lifespan of your internal needle bearings.
• Flawless Helical Gear Alignment: Formulated to maintain absolute tooth contact with the main shaft, completely eliminating transmission whining and skipped gear teeth.
• True Factory Oil Flow Match: Built-in lubrication holes and oil-weep channels perfectly match original pressure systems to keep running surfaces continuously lubricated.

Essential Countershaft Parts and Accessories

Rebuilding or maintaining an off-road transmission gearbox requires looking at every clip, bearing, and seal. We stock a comprehensive selection of original final drive elements and support hardware to reinforce your machine's setup:

• Heavy-Duty Replacement Transmission Countershafts
• OEM Internal Needle Bearings and Sealed Ball Bearings
• Factory Calibrated Thrust Washers and Gear Spacers
• High-Strength Transmission Shaft Snap Rings and C-Clips
• Matching Reverse Gears, Low-Range Gears, and Drive Pinions
• Complete Gearbox Gasket, O-Ring, and Oil Seal Kits

Comprehensive Vehicle Fitment Matrix (2015-Current)

• Can-Am Maverick Series: MAX, X3, XMR, XRS, XDS, Trail 700, 800, 1000, Sport, R.
• Can-Am Defender Series: XT, XTP, XMR, XXC, Lone Star, DPS, Limited, MAX, MAX XT, PRO.
• Can-Am Commander Series: 800R, 1000, XT, XTP, XMR, MAX, MAX XT, MAX XMR.
• Can-Am Outlander ATV Series: 450, 500, 570, 650, 700, 850, 1000R, MAX, PRO.
• Can-Am Renegade Series: 500, 570, 650, 800, 850, 1000, XMR.
• Can-Am Renegade Youth Model Series: EFI, DS, 70, 90, 110, XC 110.
• Can-Am DS Series: 70, 90, 110, 250, 450.

Frequently Asked Questions

Why is an OEM countershaft better than an aftermarket transmission shaft?

Original Equipment Manufacturer (OEM) countershafts are chemically heat-treated and case-hardened to achieve the exact Rockwell hardness rating specified by factory engineers. This prevents the shaft from being too brittle (which causes snapping) or too soft (which causes stripped splines). Aftermarket options often skip these exact metallurgic processes, threatening a total transmission failure on the trail.

What are the common symptoms of a failing transmission countershaft?

The most immediate indicators include your machine jumping or popping out of gear under load, a severe grinding or loud metallic whining sound coming from the gearbox center line, or abnormal metal chunks found on your oil drain plug magnet. If your secondary clutch has noticeable side-to-side slop on the shaft, the outer shaft support or bearing seat is worn out.

Should I replace the needle bearings when installing a new shaft?

Yes, absolutely. Internal transmission bearings and shafts wear into each other over time. Running a brand-new factory countershaft against worn, pitted, or stressed old needle rollers can quickly scar the fresh metal surfaces, generate excessive heat, drop your internal clearances, and lead to an expensive repeat tear-down.

PRO TIP: Learn More with UTV & ATV Transmission Failure: Signs, Causes & Fixes.

Restore Your Gearbox Precision — Order Today From Witchdoctors

Do not let a stripped spline, pitted gear tooth, or loose countershaft bearing lead to a blown transmission case or leave you stranded deep in the backcountry. Bring back smooth mechanical shifting, zero-slop power transmission, and true factory reliability with new Can-Am UTV/ATV OEM Countershafts & Components from Witchdoctors.com. Take advantage of our lightning-fast shipping options, top-tier customer service, and verified factory quality standards. Click Add to Cart now to rebuild your gearbox safely and conquer the wild trails with complete peace of mind!

Are You Looking to Find Great Places & Adventurous Trails to Ride Your UTV, Side by Side or ATV? Check out these highly recommended places:

• Mines & Meadows
• Mountain Ridge ATV Park
• Busco Beach ATV/ UTV Park
• Indian Mountain ATV/UTV Park
• Wildcat Offroad Park

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