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2005 Suzuki Boulevard C90 Custom Guide: Top Mods & Tips

Thinking about customizing your 2005 Suzuki Boulevard C90? Whether you want to boost its performance, refresh its look, or add personal touches, the possibilities are nearly endless. Customizing your bike not only makes it stand out, but also turns each ride into a truly personal experience.

In this article, we’ll guide you through the essential steps for customizing your C90, share expert tips, and offer practical advice to help you create your dream motorcycle.

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How to Customize Your 2005 Suzuki Boulevard C90: A Comprehensive Guide

Customizing your 2005 Suzuki Boulevard C90 is one of the best ways to express your individual style, enhance performance, and improve comfort. Whether you want to create a showstopper for weekend cruises or simply add a personal touch, there are many options and approaches you can take to truly make your C90 unique. In this article, you’ll find an in-depth guide on customizing the C90, covering the most popular upgrades, customization tips, practical advice, and answers to common questions.


Why Customize Your 2005 Suzuki Boulevard C90?

Every rider has unique preferences, and the C90—known for its powerful V-twin engine and classic cruiser style—makes an excellent platform for custom modifications. Here are some key reasons to consider customizing your C90:

  • Personal Expression: Make your motorcycle an extension of your personality and taste.
  • Comfort Improvements: Adapt the bike to suit your body shape and riding posture.
  • Performance Enhancements: Boost acceleration, handling, or braking to match your riding style.
  • Practical Upgrades: Add features for touring, commuting, or everyday convenience.
  • Aesthetic Appeal: Stand out at shows or on the road with a unique look.

Steps to Start Customizing Your C90

Customizing a motorcycle can feel overwhelming, especially if you’re new to the process. Here’s a simple, step-by-step approach to guide your customization journey:

1. Visualize Your Ideal Bike

  • Identify your goals: Are you aiming for a classic look, performance boost, increased comfort, or a mix?
  • Gather inspiration: Look at other custom Boulevard C90s, motorcycle forums, or magazines.
  • List your priorities: What parts or functions matter most to you?

2. Assess Your Current Bike

  • Inspect your C90 for existing wear or needed repairs before you start modifications.
  • Consider mileage and maintenance; some upgrades are best done after basic servicing.

3. Set a Budget

  • Decide how much you want to spend.
  • Factor in parts, labor (if you don’t DIY), and any special tools you may need.

4. Outline Your Customization Plan

  • Make a list of desired mods, ranging from ‘must-have’ to ‘nice-to-have’.
  • Organize changes into stages (e.g., start with comfort, then move to performance or visuals).

5. Gather Parts and Tools

  • Source quality aftermarket parts from trusted dealers.
  • Ensure you have necessary tools, or budget for a shop to handle more technical changes.

6. Begin Modifying – One Step at a Time

  • Start with easy bolt-on accessories or aesthetic changes.
  • Move on to more complex upgrades, such as engine or suspension modifications.

7. Test Thoroughly After Each Modification

  • Evaluate comfort, handling, or power changes after each step.
  • Adjust or fine-tune as needed for safety and performance.

Popular Customization Options for the Suzuki Boulevard C90

The Boulevard C90’s classic cruiser bones make it versatile for a wide variety of customizations. Here are some of the most popular and rewarding areas you can focus on:

1. Visual & Aesthetic Upgrades

  • Custom Paint Jobs: A new paint scheme can dramatically improve the bike’s visual impact. Many owners opt for metallic finishes, race-inspired stripes, or unique graphics.
  • Chrome Accessories: Upgrading or adding chrome parts like engine covers, handlebars, and mirrors adds that classic cruiser shine.
  • LED Lighting: Replace stock bulbs with LED kits for improved visibility and modern looks. Consider accent lighting for a dramatic night-time appearance.
  • Custom Grips and Levers: Swapping in billet aluminum or more ergonomic grips can freshen your controls and improve comfort.

2. Performance Enhancements

  • Exhaust Systems: Performance exhausts (slip-ons or full systems) not only unleash a deeper rumble but can also boost power and reduce weight.
  • Air Intake Kits: Upgrading to a high-flow air filter or aftermarket intake increases power, especially when paired with a new exhaust.
  • ECU Re-mapping/Fuel Controllers: Fine-tune fuel delivery for smoother throttle response and maximum benefit from other engine up-grades.
  • Suspension Mods: Adjustable shocks or progressive fork springs improve ride comfort and handling, especially with luggage or two-up riding.

3. Comfort and Ergonomics

  • Seats: An aftermarket seat (gel, memory foam, or touring-style) can make a world of difference for long rides.
  • Handlebars: Choose bars that fit your reach and style, from ape hangers to drag bars or pullbacks.
  • Foot Controls and Pegs: Relocating or swapping out footrests for floorboards or custom pegs can tailor the riding position.

4. Touring & Long-Distance Add-Ons

  • Windshields: Ease wind fatigue with a touring or quick-detach windshield.
  • Luggage Solutions: Saddlebags, tool rolls, or tour packs (hard or soft) enable practical storage.
  • Crash Bars & Engine Guards: These add protection and can double as mounts for extra lights or highway pegs.

5. Electronics & Modern Features

  • Phone Mounts & GPS: Secure your devices for navigation or hands-free communication.
  • Upgraded Audio: Add Bluetooth speakers or intercom systems for entertainment or group rides.
  • Security Systems: GPS trackers or advanced alarms boost peace of mind.

Benefits of Customizing Your Suzuki Boulevard C90

Customizing your C90 offers tangible benefits beyond just cool looks:

  1. Tailored Comfort: Adapt your bike to fit your height, posture, and riding preferences.
  2. Improved Safety: Enhanced lighting, visibility, and handling can make every ride safer.
  3. Performance Gains: Enjoy smoother acceleration, better handling, and more responsive brakes.
  4. Increased Value: Well-chosen, quality modifications can improve resale appeal.
  5. Community & Pride: Become part of the custom motorcycle culture and take pride in your unique machine.

Common Challenges and How to Overcome Them

While customizing your C90 is rewarding, you may encounter some hurdles. Here’s how to address common issues:

  • Compatibility Confusion: Not every aftermarket part fits every year or C90 trim. Double-check specifications for your 2005 model.
  • Budget Overruns: Upgrades add up quickly. Stick to your staged plan and choose upgrades carefully.
  • Technical Skills: Some upgrades, like ECU work or suspension swaps, require mechanical know-how. Don’t hesitate to hire a professional shop for complex installs.
  • Warranty Limits: If your bike still has coverage, certain mods can void the warranty. Review the terms or check with your dealer before major changes.
  • Legal Compliance: Aftermarket exhausts or lighting should comply with local regulations. Always check emissions and safety laws in your area.

Practical Tips and Best Practices

Putting together a successful custom C90 project is about more than shopping for parts. Here are tips to ensure a smooth experience:

  • Start Small: Focus on bolt-on upgrades you can handle yourself to build confidence and skills.
  • Keep OEM Parts: Store original components in case you want to revert changes or sell the bike.
  • Join Rider Communities: Online forums dedicated to the C90 and Boulevard series are invaluable for advice, reviews, and inspiration.
  • Test Rides: Every upgrade changes the feel of the bike. Go for a ride after each step to assess results before taking on the next mod.
  • Prioritize Safety: Quality parts and proper installation trump cheap deals. Your safety should always come first.
  • Document Progress: Take before-and-after photos and keep a log of upgrades and maintenance work.

Cost Considerations and Shipping Tips

Customizing a motorcycle is as budget-flexible as you make it. Here are some financial tips to keep your project wallet-friendly:

  • Compare Prices: Shop around online and at local dealers. Prices for the same accessory can vary.
  • Look for Used Parts: Gently used or take-off parts are often available on enthusiast forums or online marketplaces.
  • Bulk Shipping: If ordering multiple parts, combine purchases from the same supplier to save on shipping.
  • Check Return Policies: In case a part isn’t compatible, having an easy return or exchange process is comforting.
  • DIY vs. Pro Install: Save labor costs by doing basic installs yourself, but budget for professional help for electrical, suspension, or critical engine work.
  • Factor in Paint & Custom Labor: Custom paint and fabrication can get expensive. Get quotes before committing.

Concluding Summary

Customizing your 2005 Suzuki Boulevard C90 is a fun and rewarding endeavor that lets you tailor your cruiser into something uniquely yours. Whether you’re after performance, comfort, style, or a little bit of everything, there are nearly limitless options to explore. Start with a clear plan, take things step by step, and enjoy watching your vision come to life on this highly respected and capable platform. Remember: every great custom begins with one thoughtful change!


Frequently Asked Questions (FAQs)

How do I know which aftermarket parts will fit my 2005 Boulevard C90?
Check the product description for model years and fitment, or consult your owner’s manual. Online motorcycle communities are also helpful for confirming compatibility.

What are the easiest modifications I can do to customize my C90?
Simple upgrades include swapping out mirrors, grips, levers, seats, and lighting. These are generally bolt-on and require basic tools.

Will modifying my C90 affect its resale value?
Quality modifications that enhance comfort or performance can improve resale, especially if OEM parts are kept. However, highly personalized mods may narrow your market, so keep future buyers in mind.

Is it worth upgrading the exhaust system?
Upgrading the exhaust offers better sound, reduced weight, and sometimes slight power gains. For best results, combine with a high-flow air filter and, if needed, a fuel controller or remap.

Can I revert my bike back to stock after customizing?
Yes, as long as you keep all original parts and don’t make irreversible changes. This flexibility is one reason many start their customization journey slowly, focusing on bolt-on upgrades.


Customizing your 2005 Suzuki Boulevard C90 is more than just an upgrade—it’s a statement. Enjoy the process, ride safe, and make your C90 truly yours!