Transmission Case S21200RB1010 by Can-Am

Genuine Can-Am Transmission Case — OEM Part #S21200RB1010

Put power to the ground reliably with a genuine Can-Am Transmission Case. Built for the DS 250, it matches the original splines, bearings and housings, so it works with your gearbox and Visco-Lok or Smart-Lok differentials where equipped.

The gearbox, shift mechanism, differentials and drive shafts carry the full torque of the engine. Worn or mismatched parts cause noise, hard shifting and expensive failures. This part is confirmed for 1 Can-Am model from 2010 to 2026. See the full fitment list below.

Transmission Case at a Glance

• OEM part number: S21200RB1010
• Brand: Can-Am by BRP (genuine factory part)
• Part type: Shift Drum
• Fits: DS youth and sport ATV models, 2010–2026
• Condition: New

Can-Am Models and Years This Transmission Case Fits

Genuine Can-Am part #S21200RB1010 fits the models and years below. To be certain, match the part number to the factory parts diagram for your machine or contact us with your VIN before ordering.

Can-Am DS youth and sport ATV Fitment

Why Choose a Genuine Can-Am OEM Transmission Case?

• Exact gear, spline and bearing fit
• Restores smooth, positive shifting and range selection
• Designed for full engine torque and load
• Lowers the risk of repeat failures
• Sold by Witchdoctors, with factory part numbers and parts diagrams for every Can-Am model we support

Features and Materials

Key Features

• Genuine Can-Am OEM drivetrain part, part #S21200RB1010
• Machined to BRP's original specifications
• Hardened surfaces where applicable
• Matches factory seals, bearings and mounting
• Designed for the listed Can-Am models

Materials and Construction

Can-Am drivetrain parts use heat-treated alloy steel for gears, shafts, forks and splines, sealed bearings, and aluminum or cast housings, with oil- and weather-resistant seals and boots.

Common Reasons Riders Replace This Part

• Fixing grinding, popping out of gear or hard shifting
• Rebuilding gearboxes, gearcases and differentials
• Fixing 4WD or differential-lock engagement problems
• Repairing leaks and vibration from drive shafts and U-joints

Signs Your Transmission Case Needs Replacing

• Grinding, clunking or whining
• Popping out of gear or trouble selecting range
• Vibration that grows with speed
• Oil leaks at seals, covers or differentials
• 4WD or diff lock that will not engage or release

Installation Tips

1. Drain gearbox or differential fluid before disassembly.
2. Follow the BRP service manual for shimming, preload and torque specs.
3. Replace seals, O-rings and gaskets you disturb.
4. Lubricate gears and bearings with the specified fluid during assembly.
5. Refill with the correct fluid and amount, then test-ride and check for leaks.

Not sure whether to tackle it yourself? Read when to seek professional help or DIY before you start.

Can-Am Parts Diagrams for Your Machine

Find part #S21200RB1010 and every part installed with it in the factory Can-Am parts diagrams for your model:

• 2026 Can-Am DS 250 parts diagrams

Related OEM Parts for the Same Machines

Doing the job right? These genuine Can-Am parts fit the same models and are often replaced at the same time:

• Can-Am C-clip (#S42303RCA000)
• Can-Am Chain Protector Support (#S40106RCA000)
• Can-Am Chain Protector (#S40105RCA000)
• Can-Am Gear Control Unit (#S3576ARCB000)
• Can-Am Ball Bearing (#S961006305300)
• Can-Am Ball Bearing (#S961006304010)

Recommended Accessories and Maintenance Supplies

Pair your Transmission Case with these parts and supplies:

• Transmission parts and fluid — Gearbox parts and fluids
• Differential parts — Gears, bearings and seals
• Drive and propeller shafts — Prop shafts and U-joints
• Transmission oil — Gear oil for refilling after service
• Can-Am OEM parts diagrams — find every factory part for your model

Helpful Guides from the Witchdoctors Blog

• Stuck ATV/UTV Gear Shifter? How to Fix It Fast
• Fix UTV & ATV Gearcase Grinding: Popping Out of Gear
• Bad UTV Propeller Drive Shaft Symptoms: Fix Floorboard Shaking
• Can-Am OEM vs. Aftermarket Parts: Which Is Better?

Frequently Asked Questions

What is the OEM part number for this Can-Am Transmission Case?

The genuine Can-Am part number is S21200RB1010. Use it to match this part to your factory parts diagram.

Which Can-Am models does part #S21200RB1010 fit?

It fits the DS 250 (2010–2026).

Is this a genuine Can-Am part?

Yes. This is a genuine Can-Am OEM part from BRP, the same part number used at the factory, not an aftermarket copy.

What fluid should I use?

Use the gearbox and differential fluids in your Can-Am operator's guide. The wrong fluid can cause wear and engagement problems.

Should I replace bearings and seals during a rebuild?

Yes. They are inexpensive compared to labor.

Can a bad drivetrain part damage other components?

Yes. Worn parts shed metal into the fluid and damage gears and bearings. Repair problems early.

Order Your Genuine Can-Am Transmission Case Today

Ride with confidence on parts built for your machine. Order the genuine Can-Am Transmission Case, OEM part #S21200RB1010, from Witchdoctors today and keep your DS 250 running the way BRP designed it.

• How long will it take to receive my order?
• Shipping and return policy
• Questions about fitment? Contact us
• Shop all Can-Am OEM parts

Where to Ride Your Can-Am

Ready to put your machine to work? These off-road parks welcome both ATVs and UTVs. Check each park's current rules, vehicle-width limits and permit requirements before you go.

• Byrd's Adventure Center — Ozark, Arkansas: about 30 miles of marked loop trails
• The Mounds ORV Park — Mt. Morris, Michigan: a 370-acre park open year-round