511010601 Trimmer Head - Fits Redmax PT104, PT-104 Plus, BC250, BC2300, BC2600, BCZ2400S, BCZ2401S, BCZ2460S | 2 Pack
Two black 511010601 replacement trimmer heads for Redmax string trimmers.
511010601 replacement trimmer head for Redmax string trimmers shown in a lifestyle product graphic.
511010601 trimmer head dimensions and specifications infographic for Redmax compatible replacement parts.
511010601 replacement trimmer head for Redmax trimmers shown on an informational product compatibility chart.
Close-up of 511010601 trimmer head showing ABS plastic housing, metal components, and orange PVC cutting line.
511010601 trimmer head replacement part shown with a string trimmer and common repair symptoms infographic.
Infographic showing maintenance tips for the 511010601 trimmer head compatible with Redmax trimmers.
Person installing 511010601 trimmer head on a Redmax string trimmer with easy installation instructions.
Two black 511010601 replacement trimmer heads for Redmax string trimmers.
511010601 replacement trimmer head for Redmax string trimmers shown in a lifestyle product graphic.
511010601 trimmer head dimensions and specifications infographic for Redmax compatible replacement parts.
511010601 replacement trimmer head for Redmax trimmers shown on an informational product compatibility chart.
Close-up of 511010601 trimmer head showing ABS plastic housing, metal components, and orange PVC cutting line.
511010601 trimmer head replacement part shown with a string trimmer and common repair symptoms infographic.
Infographic showing maintenance tips for the 511010601 trimmer head compatible with Redmax trimmers.
Person installing 511010601 trimmer head on a Redmax string trimmer with easy installation instructions.
Lifetime Warranty

511010601 Trimmer Head - Fits Redmax PT104, PT-104 Plus, BC250, BC2300, BC2600, BCZ2400S, BCZ2401S, BCZ2460S | 2 Pack

Save 10%
0.00
$24.03
$26.69
$24.03
Out of stock
Fast delivery

Secure and trusted checkout with

  • Visa
  • Mastercard
  • American Express
  • PayPal
  • Diners Club
  • Discover
Contact for wholesale
🛠️
CONFIRM THE FIT FOR YOUR MODEL
Enter your model number

511010601 / PT104 Trimmer Head for Redmax String Trimmers - Pack of 2

Key Features

  • Commercial-Grade Bump-Feed: Designed for professional use, the PT104 "Plus" style head allows for rapid line advancement with a simple tap on the ground during full-throttle operation.
  • High-Capacity Spool: Engineered to hold up to 20 feet of 0.095" diameter line, significantly reducing downtime spent reloading during large-scale landscaping jobs.
  • Reinforced Alloy Eyelets: Features high-grade metal line exits that resist heat buildup and friction, preventing the trimmer line from "welding" to the head during intensive use.
  • Split-Spool Design: Includes an internal divider to keep the line segments separated, preventing tangling and "overlapping" for a smooth, consistent feed every time.
  • Impact-Resistant Composite: Manufactured from a specialized glass-filled nylon composite to withstand high-velocity impacts with rocks, curbs, and fence posts.

Replaces / Cross-Reference Part Numbers

  • 511010601
  • PT104 / PT104 Plus
  • 511010602
  • 630-310
  • 84471010601

Compatibility & Fitment

This trimmer head is the primary professional choice for Redmax and many Husqvarna-based straight shaft trimmers. Key compatible models include:

  • Redmax BC Series: BC250, BC225, BC2300, BC2600.
  • Redmax BCZ Series: BCZ2400S, BCZ2401S, BCZ2460S, BCZ2460TS, BCZ2600S, BCZ2601S, BCZ2660TS, BCZ3060TS.
  • Redmax TR Series: TR2300S, TR2301S, TR2350S.
  • Technical Fitment: Designed for models utilizing the M10 x 1.25 LHF (Left Hand Female) arbor thread.

When to Replace

  • Worn-Through Bump Knob: The red center knob has ground down to the point where the internal spring is exposed or it no longer triggers the line release.
  • Cracked Housing: Visible stress fractures in the black outer shell, which can lead to the head shattering at high RPMs.
  • Eyelet Failure: The metal eyelets have fallen out or are deeply grooved, causing the trimmer line to snap off inside the head frequently.
  • Internal Spool Jamming: The plastic "teeth" inside the head that lock the spool have rounded off, causing the head to dump all the line at once.
  • Excessive Vibration: The head has become unbalanced due to uneven wear, putting unnecessary stress on the trimmer's gear head and drive shaft.

Installation Tips

  • Left-Hand Threads: Remember, this head is Left-Hand Threaded. To tighten it onto the trimmer, you must turn the head Counter-Clockwise.
  • Lock the Gear Head: Use a small screwdriver or the factory locking pin to hold the gear head shaft stationary while you spin the old head off and the new one on.
  • Spool Direction: When reloading line, follow the arrows molded into the internal spool. Loading the line in the wrong direction will prevent the bump-feed mechanism from operating.
  • Soak Your Line: To extend the life of your trimmer line, soak the spool in water for 24 hours. This keeps the nylon hydrated, making it more flexible and resistant to snapping at the eyelet.
  • Clean the Spring: Every time you reload the line, shake out any dirt or grass trapped around the internal spring to ensure the "bump" action stays smooth and responsive.

FAQ

This head is compatible with a wide range of RedMax straight-shaft trimmers, including the PT104, PT-104 Plus, BC250, BC2300, BC2600, BCZ2400S, BCZ2401S, BCZ2450S, BCZ2460S, BCZ2460TS, BCZ2500S, BCZ2500SU, BCZ2500SW, BCZ2600S, BCZ2600SU, BCZ2600SW, BCZ2601S, BCZ2610S, BCZ2650S, BCZ2660TS, BCZ3000S, BCZ3001S, BCZ3050S, BCZ3050T, and BCZ3060TS.
You should consider replacing the head if you notice excessive vibration during operation, difficulty with the bump-feed mechanism, or if the plastic housing has developed cracks or significant wear from contact with abrasive surfaces. If the internal spool or eyelets are worn down, the line will frequently break or fail to advance properly.
Installation is straightforward and typically takes less than 10 minutes. You will generally need a locking pin or a small hex wrench to secure the gear case shaft while you unscrew the old head and thread on the new one. Ensure the head is tightened securely, but avoid overtightening, which can damage the threads.
Trimmer heads are high-wear components. Frequent contact with concrete, rocks, and heavy brush accelerates the degradation of the housing and eyelets. Additionally, using line that is too thick for the head or not winding the line evenly on the spool can cause internal binding and premature failure of the feed mechanism.
To extend the life of your new head, keep the exterior clean of debris and grass buildup. When reloading the line, ensure it is wound tightly and evenly to prevent tangling. If you are working in particularly rocky terrain, try to maintain a consistent height above the ground to minimize direct impact on the bottom of the head.