I N C E P T I O N A I

Top 7 Full Suspension Framesets in the United States for 2025: Expert-Tested Picks with Mullet Compatibility, Longer Reach and Frame-Specific Shock Tuning

Full suspension framesets for mountain bikes combine integrated rear suspension platforms with frame geometry and kinematics tuned for trail, enduro, and downhill riding. In 2025 the category emphasizes adjustable leverage curves, metric shocks, and refined kinematics that balance efficient pedaling with confidence on steep or technical descents. American riders increasingly choose frames that support mullet wheel setups, longer reach numbers, and frame-specific shock tuning to match local trail conditions from dry rocky singletrack to wet coastal forest routes. Consumers prefer these framesets for their upgrade potential, precise suspension behavior, and the ability to tailor ride characteristics through shock choice and linkage adjustments. Whether you are building a lightweight trail rig or a burly enduro bike, the right frameset is the foundation for a motorcycle-grade experience on natural terrain and lift-served descents alike.

Top Picks Summary

  1. Rocky Mountain Altitude Carbon Frame
  2. Cannondale Jekyll
  3. Trek Session 9
  4. Norco Revolver FS Frame
  5. Norco Range VLT Carbon Frame
  6. Forbidden Dreadnought Frame
  7. Specialized Riprock 24
1
BEST TRAIL FULL-SUSPENSION FRAMESETS

Rocky Mountain Altitude Carbon Frame

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Rocky Mountain's Altitude Carbon frame is a technically versatile trail platform with multi-position geometry adjustments and a carbon layup engineered for a balance of pedaling efficiency and descending traction. It stands out for in-house suspension and frame tuning that aim to retain climbability while opening up aggressive descending potential, positioning it as a refined alternative between Norco's rowdier focus and Devinci's more downhill-biased feel.

4.6
Show More Trail Full-Suspension Framesets
  • Chameleon geometry

  • Climb-smart pop

  • Chameleon geometry

  • Climb-smart pop

Review Summary

90%

"The Altitude Carbon earns high marks for balanced handling, efficient pedaling, and well-executed adjustable geometry that suits mixed climbing and descending; complaints are mostly around price and occasional component builds rather than the frame itself."

  • Laser-descend focus

  • High-quality carbon layup tuned for an optimal strength-to-weight balance and controlled ride feel.

  • Laser-descend focus

  • High-quality carbon layup tuned for an optimal strength-to-weight balance and controlled ride feel.

Enhanced Physical Well-Being

Skill Development & Mastery

Recreational Enjoyment

Rocky Mountain's Altitude Carbon frame is a technically versatile trail platform with multi-position geometry adjustments and a carbon layup engineered for a balance of pedaling efficiency and descending traction. It stands out for in-house suspension and frame tuning that aim to retain climbability while opening up aggressive descending potential, positioning it as a refined alternative between Norco's rowdier focus and Devinci's more downhill-biased feel.

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$3,200-4,200 USD

2
BEST ENDURO FULL-SUSPENSION FRAMESETS

Cannondale Jekyll

Briny River
🏠 Local Product

The Cannondale Jekyll is a versatile enduro frameset that emphasizes efficient pedaling and agile handling, offering a lighter, more climb-capable alternative for riders who want some high-speed stability without fully embracing the weight or complexity of a high-pivot layout. While it doesn’t focus solely on high-pivot kinematics, recent iterations adopt progressive geometry and suspension refinements that capture several HP-style benefits in a more user-friendly and financially accessible package. Compared with the specialist HP and DH frames listed, the Jekyll is the best compromise for riders needing daily-ride usability and overall value alongside strong descending capability.

4.2
Show More Enduro Full-Suspension Framesets
  • Balanced travel

  • Climb-friendly boost

  • Balanced travel

  • Climb-friendly boost

Review Summary

80%

"The Cannondale Jekyll is remembered as a very capable enduro platform that balances pedaling efficiency with confident descending, making it a popular choice for riders wanting a versatile long-travel bike; some long-term owners note it isn’t a high-pivot specialist and can feel less aggressive on extreme chutes compared with true high-pivot frames. Overall reviewers appreciate its daily-ridable manners and solid build quality."

  • Playful yet planted

  • Aggressive enduro geometry with a progressive leverage curve suited for big‑trail impacts.

  • Playful yet planted

  • Aggressive enduro geometry with a progressive leverage curve suited for big‑trail impacts.

Recreational Enjoyment

Skill Development & Mastery

Enhanced Physical Well-Being

The Cannondale Jekyll is a versatile enduro frameset that emphasizes efficient pedaling and agile handling, offering a lighter, more climb-capable alternative for riders who want some high-speed stability without fully embracing the weight or complexity of a high-pivot layout. While it doesn’t focus solely on high-pivot kinematics, recent iterations adopt progressive geometry and suspension refinements that capture several HP-style benefits in a more user-friendly and financially accessible package. Compared with the specialist HP and DH frames listed, the Jekyll is the best compromise for riders needing daily-ride usability and overall value alongside strong descending capability.

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$3,500-9,000 USD

3
BEST DOWNHILL FULL-SUSPENSION FRAMESETS

Trek Session 9

Trek Session 9
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The Session 9 is Trek's race-focused downhill frameset, known for its durable construction, Active Braking Pivot influence on stability under load, and user-friendly adjustable geometry via Mino Link for tuning ride height and head angle. It competes with the V10 on outright composure and the Demo on durability, offering a slightly heavier but exceptionally confidence-inspiring chassis favored by riders who value robustness and tunability over minimal weight. From a market standpoint, the Session bridges premium performance and widespread dealer support, making servicing and setup easier than some D2C rivals.

4.7
Show More Downhill Full-Suspension Framesets
  • Bombproof frame

  • Gravity-tuned agility

  • Bombproof frame

  • Gravity-tuned agility

Review Summary

92%

"Users report the Session 9 is exceptionally composed and confidence-inspiring in technical terrain with a very stiff chassis that produces fast lap times; common trade-offs mentioned are weight and a premium price tag."

  • Speed-eating smile

  • Long-travel carbon chassis engineered for high-speed stability and tracking.

  • Speed-eating smile

  • Long-travel carbon chassis engineered for high-speed stability and tracking.

Recreational Enjoyment

Skill Development & Mastery

Enhanced Physical Well-Being

The Session 9 is Trek's race-focused downhill frameset, known for its durable construction, Active Braking Pivot influence on stability under load, and user-friendly adjustable geometry via Mino Link for tuning ride height and head angle. It competes with the V10 on outright composure and the Demo on durability, offering a slightly heavier but exceptionally confidence-inspiring chassis favored by riders who value robustness and tunability over minimal weight. From a market standpoint, the Session bridges premium performance and widespread dealer support, making servicing and setup easier than some D2C rivals.

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$3,500-4,500 USD

4
BEST CROSS-COUNTRY FULL-SUSPENSION FRAMESETS

Norco Revolver FS Frame

Norco Revolver FS Frame

The Revolver FS is Norco’s value-minded race frame, engineered for efficient pedaling and durable performance in demanding XC use, delivering competitive kinematics at a typically lower street price than some premium rivals. Compared to the ultra-light or heavily backed brands here, the Revolver stands out for its cost-to-performance ratio and robust construction, appealing to riders seeking reliable race capability without the top-tier price premium.

4.4
Show More Cross-Country Full-Suspension Framesets
  • Pedal-efficient platform

  • Corner-hungry traction

  • Pedal-efficient platform

  • Corner-hungry traction

Review Summary

86%

"Norco's Revolver FS earns praise for being a lightweight, efficient marathon/XC frameset with a straightforward, reliable design and good value; critiques focus on a firmer ride on very rough descents and less progressive geometry for aggressive riders."

  • Rugged daily-driver

  • Budget-friendly alloy or entry-level carbon frameset option aimed at club racers and newcomers.

  • Rugged daily-driver

  • Budget-friendly alloy or entry-level carbon frameset option aimed at club racers and newcomers.

Enhanced Physical Well-Being

Recreational Enjoyment

Skill Development & Mastery

The Revolver FS is Norco’s value-minded race frame, engineered for efficient pedaling and durable performance in demanding XC use, delivering competitive kinematics at a typically lower street price than some premium rivals. Compared to the ultra-light or heavily backed brands here, the Revolver stands out for its cost-to-performance ratio and robust construction, appealing to riders seeking reliable race capability without the top-tier price premium.

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$1,500-2,500 USD

5
BEST ELECTRIC FULL-SUSPENSION FRAMESETS

Norco Range VLT Carbon Frame

Norco Range VLT Carbon Frame

Norco's Range VLT Carbon sits at the aggressive enduro end of electric full-suspension framesets, combining a long-travel geometry and carbon layup that prioritize durability and descending confidence. Compared with carbon rivals like Santa Cruz and the lighter Specialized SL, the Range delivers a more burly, value-oriented platform for riders who want a tough, modern geometry tailored to high-speed, high-impact trail use.

4.4
Show More Electric Full-Suspension Framesets
  • Plush gravity grin

  • Long-travel confidence

  • Plush gravity grin

  • Long-travel confidence

Review Summary

89%

"Riders praise the Range VLT Carbon for its capable downhill geometry, supple rear suspension, and clean battery integration. A minority report high price and occasional creaks, but long-term durability and performance are generally rated excellent."

  • Light carbon bounce

  • Full-carbon construction with e-specific layup for a balance of stiffness and impact compliance.

  • Light carbon bounce

  • Full-carbon construction with e-specific layup for a balance of stiffness and impact compliance.

Enhanced Physical Well-Being

Recreational Enjoyment

Skill Development & Mastery

Norco's Range VLT Carbon sits at the aggressive enduro end of electric full-suspension framesets, combining a long-travel geometry and carbon layup that prioritize durability and descending confidence. Compared with carbon rivals like Santa Cruz and the lighter Specialized SL, the Range delivers a more burly, value-oriented platform for riders who want a tough, modern geometry tailored to high-speed, high-impact trail use.

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$4500-5500 USD

6
BEST MULLET COMPATIBLE FULL-SUSPENSION FRAMESETS

Forbidden Dreadnought Frame

Forbidden

The Forbidden Dreadnought frame occupies the premium end of the mullet-compatible full-suspension market, built around aggressive geometry and a high-performance carbon layup that targets riders after maximum composure in steep, technical terrain. Compared to the more mainstream Norco or Rocky Mountain offerings it is a more niche, higher-cost proposition, but those extra dollars buy boutique-level kinematics and a tailored ride character that serious gravity riders will appreciate. In short, it trades broad dealer support and lower entry cost for a top-tier, purpose-built package.

4.7
Show More Mullet Compatible Full-Suspension Framesets
  • Gravity-hungry beast

  • Tanklike stability

  • Gravity-hungry beast

  • Tanklike stability

Review Summary

92%

"The Forbidden Dreadnought frame is widely regarded as a best-in-class, confidence-inspiring enduro platform with superb stability, modern geometry and high-quality construction. The main negatives in long-term reviews are the steep price, limited availability/aftercare in some regions, and that it's heavier than some rival carbon frames."

  • Rowdy grin

  • Confidence-inspiring carbon frame geometry built to handle 29" front / 27.5" rear configurations

  • Rowdy grin

  • Confidence-inspiring carbon frame geometry built to handle 29" front / 27.5" rear configurations

Recreational Enjoyment

Skill Development & Mastery

The Forbidden Dreadnought frame occupies the premium end of the mullet-compatible full-suspension market, built around aggressive geometry and a high-performance carbon layup that targets riders after maximum composure in steep, technical terrain. Compared to the more mainstream Norco or Rocky Mountain offerings it is a more niche, higher-cost proposition, but those extra dollars buy boutique-level kinematics and a tailored ride character that serious gravity riders will appreciate. In short, it trades broad dealer support and lower entry cost for a top-tier, purpose-built package.

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$2,000-2,800 USD

7
BEST YOUTH FULL-SUSPENSION FRAMESETS

Specialized Riprock 24

SHZKCP
🏠 Local Product

Specialized's Riprock 24 is notable for its confidence-first design, with stability-focused geometry and wide tires that make it an approachable Youth Full-Suspension Frameset for beginners and playful riders; it emphasizes fun and durability rather than the most aggressive trail performance. Financially it sits between budget builders and premium racers, offering a compelling blend of childhood-specific ergonomics that feels more forgiving than the race-oriented Rocky Mountain or Trek options.

4.3
Show More Youth Full-Suspension Framesets
  • Stable chunky tires

  • Playful geometry (grin)

  • Stable chunky tires

  • Playful geometry (grin)

Review Summary

84%

"The Specialized Riprock 24 is commonly praised for its wide tires and stable, confidence-inspiring ride that suits less-experienced young riders, though experienced trail kids may find its suspension and componentry limited. Reviewers report it is durable and fun for neighborhood and light-trail riding but not as performance-oriented as some competitors."

  • Kid-friendly handling

  • Wide, grippy tires provide exceptional traction and rollover on rough or loose surfaces.

  • Kid-friendly handling

  • Wide, grippy tires provide exceptional traction and rollover on rough or loose surfaces.

Recreational Enjoyment

Enhanced Physical Well-Being

Specialized's Riprock 24 is notable for its confidence-first design, with stability-focused geometry and wide tires that make it an approachable Youth Full-Suspension Frameset for beginners and playful riders; it emphasizes fun and durability rather than the most aggressive trail performance. Financially it sits between budget builders and premium racers, offering a compelling blend of childhood-specific ergonomics that feels more forgiving than the race-oriented Rocky Mountain or Trek options.

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$699-899 USD

What Science Says About Full Suspension Benefits

A growing body of applied research and industry testing supports the practical benefits of modern full suspension designs. Controlled laboratory studies and field tests show that well-tuned suspension improves tire contact with uneven terrain, reduces rider energy loss from impacts, and enhances stability during high speed descents. Metrics such as axle path, leverage ratio progression, and anti-squat influence pedaling efficiency and traction; metric shocks and tuned dampers offer more consistent damping performance across varied temperatures and impacts. Below is a beginner-friendly summary of the research-backed mechanisms that matter when choosing a frameset.

Traction and control: Studies and industry dynamometer tests show that active rear suspension improves tire contact time on rough terrain, which increases traction and reduces slip on climbs and descents.

Reduced rider fatigue: Research into vibration exposure and human performance suggests that effective suspension reduces high frequency shocks transmitted to the rider, lowering fatigue over long rides.

Pedaling efficiency: Analysis of leverage curves and anti-squat behavior demonstrates that progressive or well-calibrated linkage designs can limit pedal bob while maintaining small-bump sensitivity.

Metric shock benefits: Standard metric shock dimensions and modern damper designs provide more predictable damping and better heat management during long descents, supported by laboratory damping consistency tests.

Geometry and handling: Comparative field tests highlight that longer reach and appropriate headtube angles improve high speed stability, while mullet compatibility offers a balance between rollover and agility.

Real world validation: Independent test data from trail testing organizations and manufacturer lab reports confirm that framesets tuned for intended use cases (trail, enduro, downhill) deliver measurable performance gains when paired with proper shock valving.

This curated selection of full suspension framesets reflects what American riders value in 2025: tunable suspension platforms, modern geometry, and compatibility with mullet or mixed-wheel setups. We hope you found the information and comparisons you were looking for. Use the site search to narrow by travel, frame material, wheel size, or shock standard, or expand your search to compare component packages and complete builds.