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Chain Reaction Bicycles - Home

4231 Dundas Street West
Toronto, ON M8X1Y3

416-234-5300

Mon-Fri 10am-7pm
Sat 10am-6pm
Sun Closed
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Feature Items

  • POC Receptor Flow
    $89.99

    POC's well-ventilated Receptor Flow has a polycarbonate outer shell with an in-mold inner shell in the front and rear areas of the helmet. A lightweight EPS liner… [more]

  • Specialized S-Works Evade
    $279.99
    Product Rating
     
    5.0 stars
     (1 Review)

    Specialized's S-Works Evade is the pinnacle of aero helmet design, incorporating wind tunnel-tested design and cutting edge, ultra-light construction. The impressive low… [more]

  • POC Trabec
    $149.99

    Your riding has stepped up; it’s time for your helmet to do the same. POC’s Trabec has an inner EPS foam core, reinforced with aramid filaments, that sits around your… [more]

  • Serfas Thunderbolt Headlight
    $59.99
    Product Rating
     
    5.0 stars
     (2 Reviews)

    Serfas' Thunderbolt Headlight delivers 90 lumens in an extremely versatile, USB-rechargeable package. Attach the water-resistant silicone body nearly anywhere on your… [more]

  • Gore Bike Wear Road Windstopper Soft Shell Overshoes
    $95.99

    Warm, dry feet are happy feet. Happy feet mean happy riding, so wear Gore's Windstopper Road Soft Shell Overshoes and be happy. Made with Gore's Windstopper Soft Shell,… [more]

  • Cannondale SuperSix EVO Carbon Ultegra Di2 - 2015
    $4,199.00
    $5,299.00

    Whether crushing the competition or going for bragging rights, Cannondale's SuperSix Evo Ultegra Di2 handles all the power you can give it. This high-performance machine… [more]

 
Take a look at our events calendar and join us for a group ride! Bikes for women from Giant - Liv Bring your bicycle into us for upgrades and repairs!
See our commuter bicycles! Feel the difference on a new road bicycle! Crush it all winter on a fat bike!

Today's Cycling Tip

Paceline Basics – A “paceline” is the basic formation used to cut through the wind so that you can rest when riding in a group. Try to remain about ten inches behind your ride partner’s rear wheel. This takes practice, but is well worth the effort to learn because of the energy savings offered. Relax and watch your friend’s shoulders rather than his rear wheel. Be sure to talk so that he knows you’re back there. He should point out or tell you about road hazard coming up, too. Be careful not to let your front wheel come up and overlap your partner’s rear wheel because if he has to swerve, he’ll knock your wheel and you’ll crash.

Cycling Glossary - Word of the Day

climb categories

Climb categories are used in the Tour de France to rate difficulty. Climbs are ranked on a scale of 1 to 3, with Category 1 being the most severe. Riders are awarded points toward the King of the Mountains competition based on two things: their order over the top and the climb's difficulty. The harder the climb, the more points are available. There is also a "beyond category" climb called the Hors Categorie (HC). Its extreme difficulty makes it a big factor in stage races because better climbers can pick up more points here and make up time on their rivals.

 
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CHAIN REACTION

416-234-5300

Mon - Fri: 10:00am - 7:00pm
Sat: 10:00am - 6:00pm
Sun: Closed

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