How to Inspect and Replace Wheel Bearings on a 1974 Honda CR125

Shop parts for a 1974 Honda CR125 Dirt Bike.

Why wheel bearings matter on a 1974 Honda CR125

Wheel bearings allow the front and rear wheels of your 1974 Honda CR125 to turn smoothly with minimal friction. Good bearings keep wheel rotation precise, support handling stability through corners and landings, and reduce drivetrain drag so power delivery feels clean. On a motocross-style machine like the CR125 where jumps, hard landings and aggressive cornering are common bearings take repeated shock loading and are a critical maintenance item.

Common symptoms of worn or failing bearings

  • Side-to-side play when you grasp the wheel laterally noticeable with the bike on a stand.
  • Grinding, grittiness or rough rotation when you spin the wheel by hand.
  • Clicking, popping or knocking sounds as the wheel rotates.
  • Resistance or dragging instead of free spin.
  • Uneven tire wear or vague, unstable steering response.

Tools and supplies you may need

  • Wheel stands or a lift to keep the bike stable.
  • Basic hand tools wrenches, sockets, pliers.
  • Axle driver or appropriate sockets to remove axle and spacers.
  • Bearing driver set, socket that matches bearing outer diameter, or soft mallet and drift/punch.
  • Hub cleaning brushes, brake cleaner, rags.
  • Replacement sealed bearings sized for a 1974 Honda CR125 wheel hub.
  • Light grease for axle, spacers and seal lips.

Inspection front and rear bearings

Perform inspections with the bike securely supported on stands so both wheels can rotate freely and you can remove the axle if needed.

  1. Lift the bike so the wheel you are checking is off the ground. Use a stable stand under the frame or forks.
  2. Grasp the wheel at 12 and 6 o'clock and attempt to move it side-to-side. Any perceptible lateral play usually indicates worn bearings or damaged spacers/seats.
  3. Spin the wheel by hand. Listen and feel for grinding, roughness, clicking or any uneven rotation. The wheel should spin freely for several seconds with smooth, quiet rotation.
  4. Inspect the wheel seals visually. Look for torn sealing lips, grease contamination, rust, or mud packed around the seal. Press the seal lightly to ensure it's seated correctly.
  5. If possible, remove the axle and spin the hub on the bearings alone to isolate wheel components. Repeat the lateral play check and listen for sound directly at the bearings.

Remember that pressure washing, mud riding and water crossings common on trail runs can force moisture and grit past seals, accelerating wear. If you find dirt in the seal area or rust on races, plan for bearing replacement.

How to remove the wheel and prepare for bearing replacement

  1. Support the bike and remove the wheel following the usual steps for the 1974 Honda CR125 loosen axle nut, remove any cotter pins or clips, slide axle out while supporting the wheel, and withdraw spacers carefully.
  2. Remove brake components if necessary to access the hub; for the CR125 front wheel that typically means clearing the hub and brake assembly.
  3. Take note of spacer orientation, washer order and seal placement taking photos helps with reassembly.
  4. Use a seal puller or flat tool to remove wheel seals from both sides, exposing the bearing outer race.

Driving out old bearings and preparing the hub

  1. Press or drive bearings out from the opposite side using a bearing driver, a socket that matches the outer race, or a drift sized to bear on the outer race only. Avoid hitting the inner race do not apply force through the inner race into the axle seat.
  2. Work evenly and slowly, alternating sides as needed until the bearing backs out. Keep the hub supported squarely to avoid deforming the bore.
  3. After bearings are removed, clean the hub bore thoroughly. Remove old grease, rust and debris with a brush and solvent. Inspect the hub bore for pitting, scoring or ovalization. Any significant damage can require hub replacement.

Installing new sealed bearings

  1. Confirm the replacement bearings are correct for the 1974 Honda CR125 hub dimension and are sealed cartridge style.
  2. Warm the hub lightly if possible not necessary but can help with a smooth fit. Keep bearings at room temperature and handle them by the outer race only.
  3. Use a bearing driver or a socket that contacts the bearing outer race to press the new bearing squarely into the hub. Apply even pressure and keep the driver aligned straight with the boredo not press on the inner race.
  4. Seat the bearing fully until it bottoms out against the shoulder. Install the opposite side in the same manner.
  5. Reinstall new seals by tapping them evenly into place, making sure sealing lips are not pinched or misaligned.
  6. Lightly grease axle shafts, spacers and the sealing lips of new seals this prevents corrosion and helps keep contaminants out. Do not attempt to add grease or oil inside sealed bearings.

Reassembly and final checks

  1. Reinstall wheel spacers and axle in the same order and orientation noted during disassembly.
  2. Tighten axle hardware to appropriate snugness while supporting the wheel so bearings are not preloaded incorrectly. On the CR125, ensure wheel alignment and brake components are refitted correctly.
  3. Spin the wheel and check for smooth rotation, no lateral play and quiet operation. Verify brake function and wheel alignment on the ground before riding.

Front vs rear bearing considerations

The rear wheel on a 1974 Honda CR125 takes higher loads from drivetrain torque and landing impacts, so it often wears faster. When you service one wheel, inspect the other replacing both at once is common practice to maintain consistent handling and to avoid repeating the job soon after.

Preventive maintenance to extend bearing life

  • Avoid pointing a pressure washer directly at wheel seals during cleaning use a gentler spray or hand-clean hubs.
  • After muddy or wet rides, scrub and rinse hubs to remove packed dirt, then dry and relube external parts.
  • Check for wheel play periodically and listen for changes in wheel spin quality.
  • Replace damaged seals whenever you service bearings to keep contaminants out.

Sealed bearing guidance what not to do

Most wheel bearings for the 1974 Honda CR125 are sealed cartridge units pre-packed with grease at the factory. They are not serviceable do not try to oil, lubricate or open the internal components. If a bearing feels rough, noisy or loose, replace it rather than attempting to flush or re-grease the internals.

Related Shopping Categories

Shop Wheel Bearings for a 1974 Honda CR125 Dirt Bike.

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Shop Bearings for a 1974 Honda CR125 Dirt Bike.

Shop Bearing Tools for a 1974 Honda CR125 Dirt Bike.

Shop Wheels for a 1974 Honda CR125 Dirt Bike.

Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.