Expert Care for
Every Bike

From quick tune-ups to full custom builds. Whatever your bike needs, we've got you covered.

Repairs & Tune-ups

Our certified mechanics handle everything from flat fixes to complete drivetrain rebuilds. We service all brands and bike types — road, mountain, gravel, commuter, and e-bikes.

Most tune-ups completed within 24–48 hours. Rush service available. Turnaround may vary with shop volume.

Chain Reaction's service bench with work stands, wall-mounted tools, and rolling tool chests

Race Check

$120
  • Precision gear & brake adjustment
  • Wheel truing
  • Headset adjustment
  • Bolts torqued & checked
  • Chain & pivots lubricated
  • Dust cleaning
Book Now
Most Popular

Tune-up

$190
  • Everything in Race Check
  • Pro bike wash
  • Full drivetrain clean
  • Bottom bracket inspection
  • Lateral & vertical wheel true with hub adjustment

E-bike & tandem tune-up — $230

Book Now

Pro-build

$350+
  • Everything in Tune-up
  • Complete frame disassembly
  • Headset, hubs & bottom bracket overhaul
  • Cable & bar-tape replacement

With disc-brake bleed — ~$400
Integrated-cockpit bike — ~$450
Cables, tape & parts extra

Book Now

Minimum labor charge: $20.

Assembly & Shipping

Bought a bike online or traveling with yours? We handle professional assembly and shipping prep so it arrives — and rides — right.

Boxed Bike Assembly

$150

We build your boxed or shipped bike and dial it in — tuned, safety-checked, and ready to ride.

Book Now

Ship-Ready Boxing

$150

We professionally pack and box your bike for safe shipping or travel.

Book Now

Professional Bike Fitting

A proper fit transforms your riding experience. More comfort, more power, fewer injuries. Our fitting process uses dynamic assessment to optimize your position for your body and riding style.

The Process

1

Interview

Discuss your goals, riding style, injury history, and comfort concerns.

2

Assessment

Physical assessment of flexibility, strength, and biomechanics.

3

Adjust

Dynamic fitting on your bike with real-time adjustments.

4

Follow-up

30-day follow-up to fine-tune based on your riding feedback.

Basic Fit

Full fitting session including interview, assessment, adjustment, and 30-day follow-up.

Bike Sales

We carry a curated selection of bikes from brands we believe in. Road, gravel, mountain, hybrid, and kids' bikes.

Not sure what you need? Book a consultation. We'll help you find the right bike for your riding style and budget.

Frequently Asked Questions

What bike brands do you carry?

We carry Jamis for teens and adults, Woom for the youngest riders, and custom titanium frames built in Portugal.

Do you service bikes bought elsewhere?

Yes. We service all brands and bike types — road, mountain, gravel, commuter, and e-bikes — no matter where you bought them.

Do you work on e-bikes?

Yes. E-bike and tandem tune-ups are $230, and we service e-bikes from all brands.

How long does a tune-up take?

Most tune-ups are completed within 24–48 hours. Rush service is available, and turnaround can vary with shop volume.

How much is a professional bike fitting?

A basic fit is $100 and includes an interview, physical assessment, dynamic on-bike adjustment, and a 30-day follow-up.

Do you buy or sell used bikes?

We don't buy or sell used bikes, but you're welcome to donate any bike you no longer ride. We handle it with our friends at Wheelie Good Bikes, and you'll get a tax receipt.

Where are you located and when are you open?

We're at 996 Green Bay Rd, Winnetka, IL 60093, in Hubbard Woods. Hours are Tuesday–Friday 10am–6:30pm and Saturday 10am–5pm; we're closed Sunday and Monday.

How do I book a service or get in touch?

Call us at (224) 505-9508, send a message from our contact page, or just stop by the shop.

Need something specific?

Give us a call or stop by — we're always happy to help.

Get in Touch