36 Products
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NewFrameV2hardrailsSelle Anatomica NewFrame v2 - Hardened Rails
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SADDLESOUCESelle Anatomica Saddle Sauce
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-55%14:100013777#Black GreenEasydo MTB Bike Kickstand 24''-29'' Adjustable 34-41cm
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-49%14:100013777#KI009;200007763:201336100HILAND Bicycle Double Side Kickstand for 26 27.5 29 Inch MTB Mountain Bike
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-48%14:200003699#11 speed gold chianYBN 11 Speed Chain 116L MTB Road Bicycle Chains For Shimamo SRAM Campagnolo Gold Hollow Bicycle Chain
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-55%14:29#Basic Style;200007763:201336100WEST BIKING Professional Portable Ratchet Wrench kit Tire Lever Mini Pump
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-65%14:366#28.6x115mm;200007763:201336100WEST BIKING WEST BIKING Bicycle Aluminum Alloy Adjustable Stem Booster 70-225mm Handlebar Rise Up
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-70%14:29#Blue;200007763:201336100WEST BIKING Bicycle Chain Cleaner and Lubricator
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-70%14:193#As PictureWEST BIKING Bicycle Multi Tire Repair Maintenance Tools Set
Shop by Type
Shop by Parts Category
| Parts Category | What's Included |
|---|---|
| Shimano Components | Derailleurs, shifters, cassettes, cranksets, bottom brackets — Shimano groupset parts for MTB and road |
| Bike Chain & Cassette | Replacement chains, cassettes, and sprockets for Shimano and compatible drivetrains |
| Bicycle Pedals | Flat pedals, clipless pedals, and platform pedals for road, MTB, and commuter bikes |
| Saddles & Seatposts | Road, MTB, and comfort saddles — Selle Anatomica leather saddles and performance foam builds |
| Suspension Fork for MTB | Hardtail front suspension forks — 26", 27.5", and 29" — for trail and XC mountain bikes |
| Wheels & Tyres | Replacement wheels, rims, inner tubes, and road and MTB tyres in all sizes |
| Brakes & Brake Parts | V-brake pads, disc brake rotors, brake cables, and hydraulic brake spares |
| Handlebars & Stems | Flat bars, riser bars, drop bars, stems, and bar tape for road and MTB builds |
| Headsets & Bottom Brackets | Threaded and threadless headsets, press-fit and BSA bottom brackets for all frame types |
| Bike Cables & Housing | Brake cables, gear cables, and cable housing for drivetrain and brake maintenance |
How to Find the Right Bike Part
Buying the correct bike part requires knowing your bike's existing spec. These four checks prevent ordering the wrong component:
Shimano compatibility
Shimano bike components are grouped by tier (Claris, Sora, Tiagra, 105, Deore, SLX) and speed (7, 8, 9, 10, 11, 12-speed). A rear derailleur, cassette, chain, and shifter must all be compatible with the same speed count. Mixing speeds causes poor shifting. Check your existing groupset name on the component itself or in your bike's original spec sheet before ordering.
Bike chain and cassette matching
A bike chain and cassette must be matched by speed — a 9-speed chain on a 9-speed cassette, an 11-speed chain on an 11-speed cassette, and so on. Chain width narrows as speed count increases. Fitting a mismatched chain causes skipping, poor shifting, and accelerated wear. Check the speed count stamped on your existing cassette before buying a replacement.
Saddle compatibility
Saddles attach to seatposts via a clamp — most modern saddles use a standard rail width (43–44mm). Measure your seatpost clamp width before ordering. Saddle width (sit bone distance) affects comfort on longer rides — measure your sit bone width or check the saddle's recommended rider width. Selle Anatomica leather saddles are available in narrow, regular, and wide.
Suspension fork sizing
A suspension fork for MTB must match your wheel size (26", 27.5", or 29"), steerer tube diameter (1" or 1-1/8" threaded, or 1-1/8" threadless), and travel (80mm, 100mm, 120mm, etc.). Check your existing fork's steerer diameter and axle-to-crown length before ordering. An incorrect steerer tube diameter makes the fork incompatible with your headset and frame.
Parts Compatibility Quick Reference
| Part | Check Before Buying | Common Sizes / Standards |
|---|---|---|
| Derailleur | Speed count (7–12s), short/medium/long cage | Shimano Claris–XTR, SRAM Apex–XX |
| Cassette | Speed count, freehub body type (HG, XD, Micro Spline) | 7–12 speed, 11-28t to 10-52t range |
| Chain | Speed count — must match cassette and chainring | 3/32” (6-8s), 11/128” (9-12s) |
| Saddle | Rail width (43–44mm standard), sit bone width | Narrow 130mm / Regular 143mm / Wide 155mm+ |
| Pedals | Thread size: 9/16” (adult) or 1/2” (kids) | Flat, clipless SPD, clipless road (Look/SPD-SL) |
| Suspension Fork | Wheel size, steerer diameter, axle standard | 26” / 27.5” / 29”, 9mm QR or 15mm thru-axle |
| Bottom Bracket | Shell width, thread standard (BSA, Italian, PF) | 68mm / 73mm BSA most common on MTB |
Buy Bicycle Parts Online at Velozzo
Every part in this collection is chosen for build quality, brand reliability, and compatibility with a wide range of bike types and drivetrain standards. Our cycling components shop covers Shimano bike components for MTB and road drivetrains, replacement saddles and pedals, suspension forks, chains, cassettes, wheels, and brake parts — all with free shipping across the continental USA and a 30-day return policy. Not sure which part fits your bike? Check the compatibility notes on each product page or contact our team directly. Our team is available by email and chat seven days a week.
Call (844) 442-3025
Frequently Asked Questions
How do I know which Shimano components are compatible with my bike?
Shimano components are compatible within the same speed group. Check the speed count on your existing cassette or derailleur — it will be marked as 7-speed, 8-speed, 9-speed, and so on up to 12-speed. Your chain, cassette, rear derailleur, and shifters must all match the same speed count. Shimano also groups components by performance tier (Claris, Sora, Tiagra, 105 for road; Altus, Acera, Deore, SLX, XT for MTB) — parts within the same speed count are generally cross-compatible between tiers.
How often should I replace my bike chain and cassette?
A bike chain should typically be replaced every 1,500–2,000 miles of riding, depending on conditions and maintenance. A worn chain accelerates cassette wear — replacing the chain on time extends cassette life significantly. Cassettes typically last through 2–3 chain replacements, but should be replaced when teeth become noticeably hooked or pointed in profile. Use a chain wear indicator tool to check stretch — 0.75% elongation means replace the chain, 1% elongation means replace the chain and cassette together.
What is the difference between a threadless and threaded headset?
A threaded headset uses a quill stem that inserts into the fork's threaded steerer tube and is secured with a locknut — common on older bikes and some city bikes. A threadless (Ahead) headset uses a stem that clamps directly to the outside of the fork's steerer tube and is secured with a top cap — the standard on all modern road, MTB, gravel, and hybrid bikes. Check your current stem type before ordering a headset replacement, as the two systems are not interchangeable.
How do I choose the right saddle width?
Saddle width is based on your sit bone width — the distance between the two bony prominences you sit on. Measure by sitting on a piece of cardboard or memory foam and measuring the distance between the two impressions. Add 20–25mm to that measurement for the recommended saddle width. As a rough guide: under 130mm sit bone width suits a narrow saddle (130–138mm), 130–145mm suits medium (143–155mm), and over 145mm suits a wide saddle (155mm+). Selle Anatomica leather saddles are available in multiple widths.
What suspension fork travel should I choose for my mountain bike?
Fork travel determines how much the fork compresses over obstacles. 80–100mm travel suits cross-country (XC) and light trail riding — it keeps the bike efficient and light. 120–140mm suits trail and all-mountain riding — better for rougher terrain and drops. 150–180mm suits enduro and aggressive downhill riding. Match travel to your intended riding style and check that your frame is designed for the travel range you choose — frames have a recommended fork travel range, and exceeding it affects geometry and handling.
What is the difference between flat pedals and clipless pedals?
Flat (platform) pedals have a large, grippy surface that you stand on with regular shoes — easy to remove your foot in an emergency and suit commuting, trail riding, and beginners. Clipless pedals have a cleat mechanism that locks your cycling shoe to the pedal for more efficient power transfer and better control — used by road cyclists, XC racers, and experienced MTB riders. Despite the name, clipless pedals require you to 'clip in' — the name refers to the absence of old-style toe clips, not the cleat mechanism itself.
How do I know if a replacement wheel is compatible with my bike?
Wheel compatibility depends on: wheel diameter (26", 27.5", 29", or 700c), axle standard (quick release 9mm or thru-axle 12/15mm front, 10/12mm rear), freehub body type (Shimano HG, SRAM XD, or Shimano Micro Spline for 12-speed MTB), and brake standard (rim brake or disc — and rotor mount if disc: 6-bolt or Centre Lock). Check all four specs against your existing wheels before ordering a replacement. The axle standard and freehub type are the most commonly mismatched.
Can I upgrade my bike's drivetrain without replacing the whole groupset?
Yes - partial drivetrain upgrades are possible within the same speed count. The most common upgrade path is to replace the rear derailleur and cassette for better range or shifting performance, while keeping the existing chain, shifters, and chainrings (if they're the same speed). A full groupset replacement gives the most consistent result, but a targeted upgrade - for example, adding a Shimano Deore derailleur to an entry-level drivetrain - can meaningfully improve shifting quality at lower cost.
Do you offer free shipping on bike parts?
Yes. Every bike parts order ships free to addresses across the continental USA. No minimum spend applies and no delivery charge is added at checkout. The price shown on the product page is the final price you pay.