Description

• Complete Endurant service kit: MTM alignment + Rail B synchronizer engagement tools for precise sliding clutch alignment.

• Replaces OEM part numbers RR2011TR, RR1086TR (plate & fork), RR1088TR for professional drivetrain work.

• Speeds gearbox assembly & diagnosis; reduces repeat jobs by accurately setting Rail B & E synchronizers.

• Shop-grade build for heavy-duty 12-speed applications; designed for frequent fleet use.

• Ideal for International LT/RH/LoneStar platforms equipped with Endurant HD transmissions.

  Fitment Chart

  Note: always confirm transmission by VIN before ordering)

  Make	Model	Engine	Years
  International	LT Series	Cummins X15, International A26	2018–2025
  International	LoneStar	Cummins X15, International A26	2018–2025
  International	RH Series	International A26	2020–2025
  Freightliner	Cascadia	Detroit DD13, Cummins X12	2020–2025
  Kenworth	T680	Cummins X15	2020–2025
  Peterbilt	579	Cummins X15	2020–2025
  Volvo	VNL	Cummins X15	2020–2025*

  *Some VNL configurations use Volvo I-Shift; verify Endurant HD before purchase.
  Tackle Endurant HD gearbox service with confidence. The Oni Tools Mechanical Diagnostic Kit is a pro-grade alternative to RR2011TR that includes the MTM Alignment components and the Rail B Synchronizer Engagement Tool used to align sliding clutches and correctly position the B & E synchronizers. By replacing OEM part numbers RR2011TR, RR1086TR and RR1088TR, this kit helps technicians set neutral and confirm engagement without guesswork, reducing reassembly errors and comeback repairs. Optimized for 12-speed Endurant HD transmissions commonly found on International LT, RH and LoneStar platforms, it’s a smart choice for dealership bays, fleets and serious DIY owners servicing clutch, mechatronic or synchronizer components. Durable construction stands up to daily use, while the straightforward setup integrates with standard shop procedures for fast, repeatable results.

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