The Missing Piece of Your WAHOO KICKR BIKE Setup

WAHOO KICKR BIKE — one of the most advanced indoor training platforms available.

The power accuracy is exceptional, the ride feel is realistic, and the seamless integration with apps like Zwift, TrainerRoad, and Rouvy makes it a top choice for serious cyclists.

But here's something most riders overlook: crank length.

It sounds like a minor detail, yet it has a significant impact on your pedaling efficiency, comfort, and power output. If you've ever finished a session feeling like something was slightly "off" — maybe your knees ached, or your pedal stroke felt awkward — your WAHOO KICKR BIKE crank length could be the hidden culprit.

Why Crank Length Matters More Than You Think

Every cyclist has a unique body geometry. Your height, inseam, flexibility, and riding style all influence what crank length works best for you.

When crank arms are too long, you overextend at the bottom of each pedal stroke. This puts unnecessary stress on your knees and hips, and limits your cadence at higher intensities. When they're too short, you sacrifice leverage and struggle to generate power efficiently.

The challenge with WAHOO KICKR BIKE is that it comes with limited crank length options out of the box. For riders who fall outside the "average" range — particularly smaller riders, climbers who prefer shorter cranks, or triathletes optimizing for aerodynamics — the stock configuration often isn't ideal.

This creates a frustrating gap: you own a premium indoor trainer, but you can't replicate the exact fit of your outdoor bike.

The Solution: CRODER SPIRIT Crank for WAHOO KICKR BIKE

SPIRIT Crank was designed specifically to solve this problem. It's a direct-fit upgrade for WAHOO KICKR BIKE, offering 8 crank length options ranging from 140mm to 172.5mm.

Whether you need a compact 145mm setup for a more aero TT position, or a standard 170mm to match your road bike, SPIRIT Crank gives you the flexibility that WAHOO's stock components don't provide.

The design uses a 5-arm spider that's fully compatible with WAHOO's system, so installation is straightforward — no modifications or adapters needed. And with aerospace-grade AL7075-T6 aluminum construction and full CNC machining, you're not sacrificing quality for customization.

What's Included

The SPIRIT Crank Wahoo Kit comes with everything you need:

• SPIRIT Crank Arms (left & right)
• 5-Arm Spider (WAHOO ONLY)
• Spindle
• Preload Ring & Spacers

No extra parts to source. Just open the box and start the installation.

Installation in Under 3 Minutes

Worried about the installation process? Don't be.

With just a 5mm, 8mm, and 2.5mm hex wrench, you can complete the entire swap in under 3 minutes — no bike shop visit required.

Step-by-Step Overview

For those who prefer a quick read:

• Remove Existing Crankset — Unscrew the bolts and pull out the original Wahoo crankset.
• Preparation — Install the SPIRIT Preload Ring onto the crank arm.
• Install Drive Side — Assemble the SPIRIT Crank with the Wahoo Spider, slide spacers onto the spindle, insert into the trainer, and tighten with a 5mm hex wrench.
• Install Non-Drive Side — Attach the left crank arm and tighten with an 8mm hex wrench.
• Adjust Preload — Turn the Preload Ring counterclockwise with a 2.5mm hex wrench until snug.

Done. Your SPIRIT Carbon Crank is now securely installed and ready for performance.

Is This Upgrade Right for You?

Ready to Unlock Your Setup?

Your KICKR BIKE is capable of more — it just needs the right fit. SPIRIT Crank bridges the gap between a great trainer and a perfect training setup.