Go to search
Go to content
Go to footer

1-year returnsFor Decathlon-made products
Home Delivery Check our delivery rates & deadlines
Gift CardsGive the give of sport with an E-Gift Card to use in store or online at Decathlon.ie
2 Years Guarantee2 years guarantee for all Decathlon products.

Download the App
Become a member

Services

Play Store
Workshop
Buy Back
Cycle To Work
Business and Schools
Tent Pledge
Gift Card

Customer Care

Delivery Information
About Us
365 Days Return
2 Years Guarantee
Size Guide
Product Recall
FAQ
Report Illegal Content
Technical Support

Decathlon

Stores
Decathlon App
Marketplace Program
Sustainability
Affiliate Program
Careers

Marketplace payment providerTerms of Use

Terms And Conditions Of Sale Secure Payment General Terms of Use Legal Mentions Report a Vulnerability Gender Gap Pay Report 2024 Gender Gap Pay Report 2025 Privacy Policy Marketplace Legal Notice Cookie Policy

©2026 Decathlon

Black Friday Deals Live: Save up to 50% off Shop Now!

Unlock exclusive discounts and offers! Become a member today

🚚 Selected Free Delivery for Orders Over €200 📦 Delivery Information

Black Friday Deals
Global Brands
New Lower Prices

Cycling Fitness & Gym Equipment Hiking & Trekking Running Skiing & Snowboarding Camping & Bivouac Swimming Padel Football Golf Yoga Hunting Best Black Friday Deals

Women's Clothes Women's Shoes Women's Accessories Women's Sportswear Women's Activewear Womens sportswear Sales Women's Outdoor Collections Black Friday Women's Deals

Men's Clothes Men's Shoes Men's Accessories Men's Sportswear Activewear Mens Sportswear Sales Collections Black Friday Men's Deals

Baby & Toddlers

Kids Accessories

Outdoor Play Equipment

Kids Waterproof Clothing

Kids Winter Clothing

Selections/Highlights

Kids Sportswear Sales

Black Friday Kids Deals

Sports Accessories

Electronic & Hightech Bags & Luggage Sport sunglasses & binoculars Cups, Trophies & Medals Bike Carriers & Bike Transport Bike Racks Bath towels Bottles & Hydration Other Accessories Lighting Umbrellas Black Friday Fitness Tech Deals

Nutrition & Health

Sports Nutrition Healthy Food Brands Relaxation & Recovery Care & Hygiene Sun Protection and Accessories Black Friday Supplement Deals

Black Friday Deals Christmas Gift Ideas Waterproof Cold Snap New Lower Prices Base Layers School Holidays Lowest Price Best Value Picnic Essentials Back To School Collection Back to Sports Build Your Gym

Repair & Maintenance

Maintenance Workshop Services After Sales Support

Black Friday Deals

New Lower Prices

Sports
Cycling
Bikes
Mountain Bikes
27.5" Mountain Bikes
27.5" U-FIT Mountain Bike ST100 - Red
Spare Parts
bike direction spare parts

Compatible spare parts

Keep enjoying your 27.5" U-FIT Mountain Bike ST100 - Red with our selection of compatible spare parts.

stem
headset
handlebar
spacer
handle

ROCKRIDER 1-1/8" 60/80/90/100 7° 31.8 Mountain Bike Stem - Black
Reviews.votesAria
Current price €16.00
ROCKRIDER 1-1/8" 60/70/80/90 mm 31.8 Mountain Bike Stem - Black
Reviews.votesAria
Current price €16.00
ROCKRIDER 31.8 mm 1 1/8" 40mm / 60mm Mountain Bike Stem - Black
Reviews.votesAria
Current price €16.00
ROCKRIDER Mountain Bike Stem 1"1/8 50mm/60mm/70mm Ahead 7 31.8 - Black
Reviews.votesAria
Current price €16.00
ROCKRIDER 1-1/8" EC34/28.6 EC34/30 External Cup Headset - Black
Reviews.votesAria
Current price €11.00
ROCKRIDER 25.4 620 mm Steel MTB Handlebar - 50 mm Rise - 6° Backsweep - 5° Upsweep - Black
Reviews.votesAria
Current price €11.00
ROCKRIDER 100 Short Sport Grips
Reviews.votesAria
Current price €5.00€2.50/unit
ROCKRIDER 1-1/8" 5 mm Headset Polypropylene Spacer - 36 mm External Diameter - Black
Reviews.votesAria
Current price €4.00
ROCKRIDER Mountain Bike Stem 1"1/8 60/70MM 7° 31.8 - Black
Reviews.votesAria
Current price €16.00Out of stock
BTWIN Headset 1"1/8 60/75/90/110 mm 25.4 mm Diameter Handlebar Aheadset - Black
Reviews.votesAria
Current price €10.00Out of stock