Best Dirt Bike Bottom End Kits and Bar End Upgrades for 2026

Choosing the right dirt bike bottom end kit and bar end accessories can extend engine life, improve reliability, and protect handlebars during rugged rides. This article highlights five relevant options, including complete bottom end rebuilds and bar end plugs, with practical guidance to help riders compare features, compatibility, and durability.

Product Brand Notes
2001-2003 Suzuki RM125 Dirt Bike Complete Bottom End Engine Rebuild Kit Suzuki RM125 Complete bottom end rebuild kit
Hot Rods Bottom End Kit CBK0104 Rods Compatible with Honda CR 85 R / CR 85 RB Big Wheel (2005-2007)
ODI Bar End Plugs, Anodized Black Aluminum Old Dutch International Store Pair, MTB/gripp accessories
Tusk Bar Ends (Silver) TUSK Store Protects grips and bars
2 PCS Motorcycle Bar End Plug, Aluminum Alloy Various 7/8″ 22mm, universal compatibility

2001-2003 Suzuki RM125 Bottom End Kit

2001-2003 Suzuki RM125 Bottom End Kit

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The complete bottom end engine rebuild kit for the Suzuki RM125 from 2001 to 2003 provides essential components for restoring top-end reliability. While exact contents are not listed, such kits typically include a crankshaft, bearings, seals, and a full gasket set, enabling a thorough refresh of the lower engine. This option is suitable for riders seeking a full rebuild alignment with OEM-style performance on RM125 platforms. Proper installation requires mechanical skill and torque specifications per service manual.

Hot Rods Bottom End Kit CBK0104

Hot Rods Bottom End Kit CBK0104

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Designed as a direct replacement, the Hot Rods Bottom End Kit CBK0104 fits Honda CR 85 R (2005-2007) and CR 85 RB Big Wheel models from 2005 to 2007. The kit contains a crankshaft, main bearing, seals, and a complete gasket set, aiming to meet or exceed OEM specifications for fit and performance. This option is ideal for riders seeking a drop-in bottom-end solution with a focus on reliable clearances and durable gaskets for plug-and-play installation.

ODI Bar End Plugs, Anodized Black Aluminum

ODI Bar End Plugs

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ODI Bar End Plugs provide a protective end for handlebars, with an anodized black aluminum finish for a clean, durable look. Intended use includes mountain biking and general grip protection, with a locking bolt feature for secure attachment. While primarily marketed for MTB, the rugged aluminum construction makes these plugs a versatile upgrade for dirt bikes seeking additional handlebar protection and enhanced stability during impact or tip-ins.

Tusk Bar Ends (Silver)

Tusk Bar Ends Silver

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Tusk Bar Ends in silver provide grip protection and bar defense against crashes and mishaps. These bar ends help safeguard grips and bars from damage while maintaining compatibility with a wide range of handlebars. A note: these ends are not compatible with closed-end aluminum throttle tubes, so compatibility with existing components should be verified before purchase.

2 PCS Aluminum Bar End Plugs (7/8″ 22mm)

2 PCS Aluminum Bar End Plugs

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These 2-piece aluminum bar end plugs are designed for 7/8″ (22mm) handlebars, offering dual function by protecting the bars while enhancing the visual appeal of the bike. They are described as anti-fall plugs that contribute to improved stability and balance during rides. Constructed from high-quality aluminum alloy, they are built for durability under regular service and off-road adventures.

Buying Guide

  • Compatibility: Verify model year, make, and model of the dirt bike to ensure the bottom end kit fits precisely. Some kits are OEM-spec replacements, while others are universal and may require adjustments.
  • Component quality: For bottom-end kits, prioritize crankshafts, bearings, seals, and gasket sets that meet or exceed OEM specs to maintain engine performance and longevity.
  • Installation considerations: Bottom-end work requires mechanical skill, torque specs, and sometimes specialized tools. Consider professional installation if unsure.
  • Bar ends material: Aluminum is common for bar ends due to light weight and durability. Look for anodized finishes for corrosion resistance and aesthetic durability.
  • Protection vs. compatibility: Bar ends protect handlebars during impacts but must be compatible with throttle tubes and grip assemblies to avoid interference.
  • Durability and warranty: Check product warranties and user reviews for long-term durability under off-road conditions and frequent vibrations.
  • Maintenance impact: A well-chosen bottom-end kit can reduce downtime, but regular inspection of crankcase seals, bearings, and gaskets is still essential to prevent leaks and performance degradation.
  • Price-to-value: Compare kit contents, included gaskets, and aftermarket support to determine if a higher-priced option provides meaningful long-term durability and easier maintenance.