M8‑FXR DRIVETRAIN MOCKUP KIT
Simplify and speed up your Milwaukee‑Eight (M8) FXR conversion mockup. During the early build phase, you need the drivetrain locked down and square without wrestling a full swingarm or deforming rubber isolators. This kit includes precision 3D‑printed components designed specifically for mockup work, giving you a clean, rigid, and repeatable way to position the drivetrain for accurate fabrication and test‑fitting.
- Lock the drivetrain in place for precise alignment and measurement.
- Replicate swingarm geometry without installing the full rear assembly.
- Eliminate isolator flex to keep everything square during test fits.
- Faster in/out cycles while you verify clearances, routing, and fitment.
What’s Included
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Swingarm Replicator Blocks
Dimensionally accurate mockup blocks that mimic swingarm mount spacing, providing a rigid reference point for the M8 drivetrain during fabrication. -
Solid Mockup Isolators
Solid replacements for rubber isolators to remove flex and hold the drivetrain firmly in place while you square and align components.
Built for Builders
- Perfect for M8‑FXR swap mockup.
- Protects real rubber isolators — no distortion during mockup.
- Prevents unnecessary wear or damage to expensive OEM and aftermarket parts.
Fitment
- Designed for use during mockup on Harley‑Davidson FXR chassis fitted with a Milwaukee‑Eight drivetrain.
- Note: Minor shimming may be required depending on frame variations or custom geometry.
Mockup‑Only Notice
This kit is intended for mockup and fabrication only. Not for riding or road use. Replace with proper service parts before final assembly.
How It Works
- Install the solid mockup isolators in place of rubber isolators.
- Position the swingarm replicator blocks to mimic swingarm spacing and alignment.
- Square the drivetrain, confirm centerline, and verify clearances.
- Remove and re‑install the drivetrain quickly as needed during test‑fit cycles.
FAQ
Can I ride with these installed?
No. These components are for mockup and fabrication only and must be replaced with proper service parts before riding.
Do I still need the swingarm during mockup?
Not necessarily. The replicator blocks provide a rigid stand‑in for the swingarm mounts, letting you lock the drivetrain without installing the full rear assembly.
Will this work with all Milwaukee‑Eight engines?
No. This kit is designed for M8 Touring drivetrain mockup in an FXR chassis. Individual builds may require minor adjustment due to custom parts or geometry.
Why solid isolators for mockup?
Solid isolators remove flex so the drivetrain stays square and repeatable, making measurements and fabrication more accurate.
Builder Notes
Locking the drivetrain eliminates movement while you set angles, mark tabs, and test routing. Most builders report faster mockup cycles and cleaner measurements vs. working around rubber isolators and a full swingarm.
Keywords: M8 FXR mockup kit, FXR drivetrain alignment, Milwaukee‑Eight FXR conversion, swingarm replicator blocks, solid isolators, FXR engine swap mockup.