Giant Anthem Suspension Parts: A Comprehensive Guide to Upgrades and Maintenance

The Giant Anthem is a popular cross-country/trail bike known for its efficient Maestro suspension platform. Over time, suspension parts may need replacement or upgrading to maintain performance or adapt to your riding style. Whether you're refreshing a worn-out system or seeking better traction and control, understanding the key components is essential. This guide covers the main suspension parts for the Giant Anthem—shocks, forks, linkages, hardware, and more—with practical advice on selection and maintenance.

Understanding the Giant Anthem Suspension System

The Anthem uses Giant's Maestro suspension, a four-bar linkage design that separates pedaling forces from bumps. The system comprises a rear shock, a rocker link, upper and lower links, and a set of pivot bearings and hardware. The front suspension is handled by a fork, typically from Fox, RockShox, or Giant's own Crest line. While the frame design has evolved over the years, most Anthem models share similar maintenance and upgrade paths.

Rear Shock Options and Upgrades

The rear shock is the heart of the Anthem's suspension. Stock shocks often include Fox Float DPS, Fox Float X, RockShox Deluxe, or Giant-branded units. When upgrading, consider the type of riding you do:

Air Shocks vs. Coil Shocks

• Air shocks are lightweight and adjustable (air pressure, rebound, sometimes low-speed compression). They suit cross-country and trail riding. The Fox Float DPS is a common upgrade offering three modes: Open, Medium, and Firm.
• Coil shocks provide more consistent damping and smoother small bump compliance but add weight. They are better for aggressive trail or enduro riding. Examples include the Fox DHX2 or RockShox Super Deluxe Coil.

Stroke and Eye-to-Eye Length

Anthem frames typically require a 165mm eye-to-eye shock with 45mm stroke (for 100mm rear travel) or 190mm eye-to-eye with 50mm stroke (for 120mm travel on some models). Always check your specific year and model. Using the wrong size can damage the frame or void warranty.

Tuning Tips

• Sag: Set sag around 25-30% for XC, 30-35% for trail.
• Rebound: Faster for rocky terrain, slower for jumps.
• Volume spacers: Add them to increase progression and prevent bottom-out.

Front Fork Upgrades

The Anthem typically comes with a 100-120mm travel fork. Popular choices include Fox 32 or 36, RockShox Sid or Pike, and Giant's Crest line. When upgrading, consider:

Travel Compatibility

Most Anthem frames can handle 100-120mm without altering geometry too much. Exceeding recommended travel can steepen the head angle and affect handling. Check Giant's specs for your model year.

Fork Features

• Air spring: Lighter and adjustable. Fox's EVOL air sleeve increases volume for a more linear feel.
• Damper: Look for adjustable low-speed compression (LSC) and high-speed compression (HSC) if you want fine tuning. Charger damper (RockShox) or FIT4 (Fox) are reliable.
• Chassis stiffness: For aggressive riding, consider a 34mm or 36mm stanchion fork (e.g., Fox 36) for improved steering precision.

Axle and Steerer

Ensure the fork has a 15x110mm Boost axle and a tapered steerer. Most modern Anthems use Boost spacing.

Linkage and Hardware Maintenance

The pivot bearings and hardware take a beating. Over time, they become gritty or loose, sapping suspension performance. Regular maintenance includes:

Pivot Bearings

• Types: Sealed cartridge bearings (6000, 6900, 6800 series). Common sizes are 10x19x5, 12x18x4, etc. Check your model's specs.
• Replacement: Press out old bearings with a bearing press kit. Clean the bores and install new ones with a little grease. Expect to replace every 1-2 years depending on conditions.

Hardware (Bolts and Washers)

• Torque specs: Use a torque wrench. Typical pivot bolts: 15-20 Nm. Rear seal bolts: 5-8 Nm. Over-tightening can crush bearings.
• Grease: Apply anti-seize or bike-specific grease to bolts to prevent seizing.
• Upgrade kits: Some companies offer titanium bolt kits to save weight, but steel is more durable for pivot bolts.

Linkage Plates

If the rocker link or main linkage is cracked or bent, replace with genuine Giant parts. Aftermarket linkages may alter kinematics but are rare for Anthem.

Shock Hardware and Bushings

The shock mounts use bearings or DU bushings. Fox shocks often have a trunnion mount (standard on newer Anthems). The hardware includes shock bolts and bushings that wear out. Replace if you notice play or creaking. Stock hardware is fine, but upgrade to titanium bolts for weight savings (e.g., from J-Tech or similar).

Aftermarket Suspension Links

Some manufacturers produce aftermarket links for the Giant Anthem to adjust geometry or progression. For instance, a flip chip link can change head angle by 0.5 degrees. However, these are specific to certain model years. Always verify compatibility. Brands like Cascade Components offer links for some Anthem models. These can be a good way to slacken the bike without buying a new frame.

Upgrading the Suspension Fork for Specific Riding

If you primarily ride smooth XC trails, a light 100mm Fox 32 with FIT4 damper is ideal. For rougher terrain, a 120mm Fox 36 or RockShox Pike offers more stiffness and bump absorption. Keep in mind that a longer fork will raise the front end, potentially making steep climbs trickier. Some riders compensate by lowering the fork's travel with a travel reduction kit (available from Fox and RockShox).

Suspension Setup Tips for Giant Anthem

Proper setup transforms the riding experience. Follow these steps:

1. Set sag: For the rear, position the shock pump and set sag with rider weight (wear riding gear). For the front, use the fork's sag marker or O-ring.
2. Adjust rebound: Start with the manufacturer's recommended settings (usually found online) and adjust based on trail feedback. Faster rebound for chatter, slower for big hits.
3. Compression damping: Many shocks have low-speed compression adjustments. Start in the middle and adjust for pedal bob or dive under braking.
4. Volume spacers: If you bottom out frequently, add spacers. If you use all travel but not harshly, remove one for a plusher ride.

Common Issues and Solutions

• Creaking pivots: Usually caused by loose bolts or dry bearings. Clean and grease pivot bolts. If creaking persists, replace bearings.
• Suspension feeling harsh: Check sag and rebound. Ensure the shock or fork is not overfitted with volume spacers. Inspect for binding in the linkage.
• Bottoming out hard: Increase air pressure (if air shock) or add volume spacers. For coil shocks, consider a heavier spring rate.
• Leaking seals: Fork or shock seals can leak oil. Service kits are available for Fox and RockShox. If not confident, take to a shop.

Final Recommendation

For most Giant Anthem owners, the best investment is a quality rear shock upgrade (Fox Float X or RockShox Super Deluxe) and periodic bearing maintenance. If your fork feels dated, replace it with a modern, serviceable air fork like the Fox 36 Performance or RockShox Pike Ultimate. Always match travel to your frame's specs. For hardcore riders, consider a coil shock for plushness. Keep the linkage clean and torqued properly—these simple steps will keep your Anthem riding like new.

Remember to consult Giant’s official specs for your specific model year, as suspension parts compatibility varies. When in doubt, ask a local bike shop or refer to the manufacturer’s technical documents.