Rocky Mountain AltitudevsSlayer

Dropping into a steep, root-infested chute, the choice between Rocky Mountain's Altitude and Slayer defines the ride. The Altitude would feel like a focused instrument, letting you pick a precise line and pump for speed while absorbing hits with surgical precision. On the Slayer, you'd brace for impact and simply hold on, its massive travel and sheer mass plowing through everything in its path, inviting outright recklessness.

Rocky Mountain Altitude
Rocky Mountain Slayer

Overview

These two bikes, both hailing from Rocky Mountain, target the gravity-oriented rider, yet they carve distinct paths through the big-mountain landscape. The latest Altitude, a complete redesign for 2024, has shed any lingering 'long-legged trail bike' identity, firmly embedding itself as a modern enduro race machine. It features the revived LC2R dual-link suspension, positioning the shock low in the frame for a confidence-inspiring, planted ride focused on speed and composure. This bike is about refining the aggressive enduro experience, making it more adaptable and intuitive. Conversely, the 2023 Slayer continues its legacy as a formidable freeride bruiser. With 180mm of travel front and rear, it's the brand's unapologetic 'monster truck,' built for absorbing huge hits and dominating bike park laps or gnarly, technical descents. While the Altitude evolved to be a faster, more precise enduro weapon, the Slayer doubles down on plushness, stability, and sheer brute force, emphasizing unwavering confidence when simply smashing through terrain. The Altitude wants you to manage speed to go faster; the Slayer just wants you to go faster, period. It represents a simpler, more direct approach to gravity biking, less concerned with pedaling efficiency and more with pure downhill capability.

Ride and handling

Pointed downhill, the Altitude and Slayer reveal their true colors. The Altitude, with its LC2R suspension, earns praise for a "magic eraser" quality, making terrain disappear and providing exceptional bump-eating capabilities. Reviewers describe a "fine balance of sensitivity and rear wheel grip," with solid mid-stroke support for pumping and resisting wallow. This translates to an incredibly planted and stable feel at speed, letting riders hold a line "without fighting the trail." It asks for speed and commitment, rewarding an active rider who uses terrain to generate momentum, but can feel less lively when the trail flattens out, or less playful than its predecessor. In contrast, the Slayer's 180mm of travel delivers an overwhelmingly plush and gooey ride. It's built to simply "eat everything up," turning rock gardens into "cakewalks" and instilling immense confidence on steep, rough terrain. This bike is an "all-out traction monster," often described as feeling "bottomless" and "glued to every snotty off-camber pitch." However, this plushness can come with a trade-off: some reviewers noted the stock suspension tune, particularly on the C50, felt "soft" or "undefined" in the mid-stroke, absorbing rider input rather than providing dynamic support. It can get "sucked into holes rather than skimming over them," feeling less precise for active riders compared to the Altitude's more composed mid-stroke. Climbing highlights their divergent philosophies. The Altitude, though undeniably a gravity bike, surprises with its respectable uphill performance. Its active LC2R suspension provides "essentially an endless amount of traction," allowing riders to "claw its way uphill easily" even on loose, technical ascents. The steep 77-77.8° effective seat tube angle aids a comfortable, efficient seated pedaling position. While some pedal bob is present, especially with coil shocks, it's generally manageable. The Slayer, on the other hand, is explicitly not a climber's bike. It will get you to the top, but often with a "sluggish and floppy" feel, its suspension tending to "swallow up your input like a sandbag" without the climb switch. It's a means to an end, requiring patience and reliance on the shock's firm setting. When it comes to maneuverability, the Altitude leans towards stability, with a slack head tube angle (62.9-63.8°) and a long wheelbase encouraging straight-line speed. It prefers wider cornering radii and can demand more effort in tight, slow-speed tech. Yet, its low center of gravity and responsive nature allow for surprising bursts of energy for jumping. The Slayer is also extremely stable, a "monster truck" happiest going "mach chicken." However, its sheer size and plushness can make it feel "cumbersome" in tight corners, requiring significant body English. The mixed-wheel option, standard on smaller Slayer sizes and available as an aftermarket link for larger ones, helps inject a bit more "pep" and liveliness into its handling.

Specifications

Comparing the selected builds, the Rocky Mountain Altitude Carbon 70 (2025) at $5,799 and the Slayer Carbon 90 (2024) at $10,299 sit at different price points and component tiers, reflecting their intended uses and market positions. The Altitude C70 punches above its weight with a SRAM GX Eagle Transmission wireless drivetrain and powerful SRAM Maven Bronze Stealth 4-piston brakes. Its RockShox ZEB Select+ fork and Vivid Select+ shock offer capable performance, with Race Face ARC 30 alloy rims providing a solid base. Crucially, it includes CushCore Trail tire inserts and robust Maxxis Assegai/Minion DHR II tires right out of the box, a consistent highlight across Altitude reviews for being genuinely "race-ready." Stepping up significantly in price, the Slayer C90 features a top-tier Shimano XTR 12-speed drivetrain and XTR Trail 4-piston brakes with IceTec metal pads. Its suspension is handled by Fox's top-shelf 38 Float EVOL GRIP2 Factory fork and a DHX2 Factory coil shock with an SLS spring, indicating an uncompromising focus on gravity performance. Race Face ARC Carbon 31 wheels underscore the premium build. While the Slayer C90's spec is undeniably high-end, some general spec trends across both lineups reveal interesting trade-offs. Rocky Mountain consistently earns praise for speccing durable Maxxis tires (DoubleDown or EXO+ casings) and CushCore inserts on most carbon and higher-end alloy builds for both models, saving riders immediate upgrade costs. However, a common critique across Altitude reviews, particularly for the C70 and Alloy 70 builds, is the choice of Race Face AR 30 alloy rims, which some testers found "quite soft" and prone to flat-spotting. Similarly, the DT Swiss 370 hubs (with 18T star ratchet) often spec'd on the Altitude are noted for their "painfully slow engagement," a common target for early upgrades. On the Slayer, the WTB ST i30 alloy rims, especially on the C50, were frequently described as "infamously soft" and prone to buckling, indicating a potential quality gap for a bike designed for extreme abuse. Dropper post travel also sees recurring comments; for instance, the 175mm Race Face Aeffect R dropper on a large Slayer Carbon 50 is often considered "far below modern standards," restricting freedom of movement. While the Altitude C70 comes with a OneUp V3 Dropper up to 210mm in LG/XL, this highlights a more thoughtful approach to dropper length on the Altitude compared to some Slayer builds. Both carbon frames feature Rocky's PenaltyBox storage, though the magnetic lid on the Slayer caused some rattling issues for reviewers, whereas the Altitude's hinged door and AirTag holder are generally praised as "best in class." The Altitude notably uses a threaded BSA bottom bracket, a welcome change for many home mechanics, while the Slayer retains a press-fit BB92.

AltitudeSlayer
FRAMESET
FrameFORM™ Alloy | Full Sealed Cartridge Bearings | Threaded BB | Internal Cable Routing | 2-Bolt ISCG05 Tabs | RIDE-4™ Adjustable Geometry | 160mm Travel | FORM™ Alloy Rear TriangleFORM™ Alloy frame w/ FORM™ Alloy rear triangle | 180mm travel | full sealed cartridge bearings | press-fit BB | internal cable routing | 2-bolt ISCG-05 tabs | RIDE-4™ adjustable geometry | 2-position rear axle
ForkRockShox Zeb RC 170mm | 27.5 = 38mm Offset | 29 = 44mm OffsetRockShox Boxxer Select RC, 200mm (27.5: 36mm offset / 29: 46mm offset)
Rear shockFox Float X Performance | Sealed Bearing Eyelet | 40x10mm F Hardware | SM = 210x55mm | MD - LG - XL = 230x60mm | Size-Specific tune in FAQRockShox Super Deluxe Coil Select, 230 x 65mm, sealed bearing eyelet (25x8mm F hardware) | coil spring rates: SM 400 / MD 450 / LG 500 / XL 550
GROUPSET
Shift leversShimano Deore 12spdSRAM GX DH
Front derailleur
Rear derailleurShimano Deore 12spdSRAM GX DH
CassetteShimano Deore 10-51T 12spdSRAM PG-720, 11-speed, 11-25T
ChainShimano M6100KMC X11-1
CranksetShimano Deore | 32T | 24mm Spindle | Crankarm Length: SM = 165mm | MD - XL = 170mmRace Face Aeffect R Cinch, 24mm spindle, 32T | crank length: SM 165mm / MD-XL 170mm
Bottom bracketShimano Threaded BBMT501-BShimano SM-BBMT500
Front brakeShimano MT6120 4 Piston | Metal PadsSRAM G2 RE, 4-piston hydraulic disc (metal pads)
Rear brakeShimano MT6120 4 Piston | Metal PadsSRAM G2 RE, 4-piston hydraulic disc (metal pads)
WHEELSET
Front wheelWTB ST i30 TOUGH TCS 2.0 | 32H | Tubeless Set Up | Sealant Incl; Shimano TC500 | 15mm Boost; 2.0 StainlessRace Face ARC HD 30, 32H, tubeless compatible (tape/valves/sealant not included); Rocky Mountain DH Sealed Boost, 20mm; 2.0 stainless
Rear wheelWTB ST i30 TOUGH TCS 2.0 | 32H | Tubeless Set Up | Sealant Incl; Shimano TC500 Boost 148mm; 2.0 StainlessRace Face ARC HD 30, 32H, tubeless compatible (tape/valves/sealant not included); SRAM MTH 746 Boost, 148mm; 2.0 stainless
Front tireMaxxis Minion DHF 2.5 WT EXO Tubeless Ready | Tubeless Set Up | Sealant InclMaxxis Minion DHF 2.5 WT, 3C MaxxGrip, DH casing, Tubeless Ready
Rear tireMaxxis Minion DHR II 2.4 WT EXO Tubeless Ready | Tubeless Set Up | Sealant InclMaxxis Minion DHR II 2.4 WT, 3C MaxxGrip, DH casing, Tubeless Ready
COCKPIT
StemRocky Mountain 31.8 AM | 5° Rise | All Sizes = 40mmRocky Mountain 35 CNC DH
HandlebarsRocky Mountain AM | 760mm Width | 38mm Rise | 9° Backsweep | 5° Upsweep | 31.8 ClampRocky Mountain AM, 780mm width, 38mm rise, 9° backsweep, 5° upsweep, 35mm clamp
SaddleWTB Solano Fusion Form 142 | Steel RailsWTB Volt Race 142
SeatpostX Fusion Manic Composite 30.9mm | SM = 150mm | MD = 170mm | LG - XL = 200mmRocky Mountain SL, 30.9mm
Grips/TapeODI Elite Pro Lock OnODI Elite Pro Lock-On

Geometry and fit comparison

Comparing the geometry of the Rocky Mountain Altitude and Slayer (both in size Large), both bikes boast progressive, slack numbers, but with subtle differences that significantly influence their on-trail character. The Slayer edges out the Altitude in slackness, featuring a 62.5-degree head tube angle compared to the Altitude’s 62.9 degrees. This 0.4-degree difference, while seemingly small, accentuates the Slayer's downhill bias, contributing to its unwavering composure and monster-truck-like ability to plow through steep, chaotic terrain, making it feel less nervous at high speeds. Reach numbers are nearly identical, with the Altitude at 475mm and the Slayer at 474mm. Stack heights also mirror each other closely (Altitude 639mm vs. Slayer 638mm). This means both bikes offer a similarly roomy front end and a commanding, upright riding position that instills confidence when descending. However, the Slayer features a notably longer top tube at 622mm compared to the Altitude's 610mm. This extra length in the seated position, combined with an identical 77.0-degree seat tube angle on both, means the Slayer's cockpit feels stretched out on climbs, further emphasizing its lack of climbing eagerness compared to the Altitude, which feels more centered despite its slightly shorter top tube. A key difference lies in the chainstay lengths. The Altitude has a longer 450mm chainstay, compared to the Slayer’s 440mm (in the specific size L data). This longer rear-center on the Altitude helps it stay incredibly planted and stable at speed, contributing to its race-bred composure. It helps the bike track rough terrain with minimal deflection. The Slayer, with its slightly shorter 440mm chainstays, can feel a "hair livelier" in the rear, especially when paired with a mixed-wheel setup, allowing for a more playful feel and easier cornering in some situations, though still demanding effort in tight spots. This difference in rear-center length, though just 10mm, contributes to the Altitude's perception of stability and the Slayer's tendency towards pure downhill fun. Standover height is another notable delta: the Altitude boasts a significantly lower standover at 797mm compared to the Slayer's 820mm. This offers more clearance for rider movement and confidence in steep, technical terrain or when dismounting quickly. Both bikes offer impressive adjustability: the RIDE-4 flip chip allows changes to head tube angle, seat tube angle, and bottom bracket height, while reach-adjust headsets provide +/- 5mm of reach tuning. The Altitude further benefits from size-specific rear triangles, and the ability to run a mixed-wheel setup, allowing riders to fine-tune the bike's personality to match their body type, local trails, and preferred riding style, whether seeking ultimate stability or a touch more agility.

vs
FIT GEOAltitudeSlayer
Stack639638-1
Reach475474-1
Top tube610622+12
Headtube length115110-5
Standover height797820+23
Seat tube length4404400
HANDLINGAltitudeSlayer
Headtube angle62.962.5-0.4
Seat tube angle77770
BB height
BB drop29290
Trail
Offset
Front center
Wheelbase12821281-1
Chainstay length450440-10

Who each one is for

Rocky Mountain Altitude

The Rocky Mountain Altitude is for the aggressive enduro racer or gravity enthusiast who prioritizes unflappable downhill performance and high-speed confidence on technical, steep terrain. This rider thrives on pushing limits, seeking out challenging lines, and values a bike that can erase mistakes and smooth out chaotic trails. If your weekends involve shuttling to gnarly descents, hitting bike parks, or earning your turns on demanding climbs to unlock the gnarliest trails, and you appreciate a bike that feels taut, responsive, and rewards active input, the Altitude is your weapon. It's also ideal for those who enjoy fine-tuning their bike's personality with extensive geometry adjustments.

Rocky Mountain Slayer

The Rocky Mountain Slayer is for the unapologetic freerider or bike park fiend who lives for huge hits, massive berms, and simply smashing through anything in their path. This rider wants maximum travel and plushness, prioritizing unwavering stability and an airbag-like suspension feel over nuanced handling or climbing efficiency. If you frequent lift-accessed terrain, are constantly seeking out the biggest jumps and drops, or tackle big-mountain lines where sheer brute force and confidence are paramount, the Slayer will be your steadfast companion. It's a bike that encourages recklessness and handles it with ease, allowing you to ride faster and harder than you thought possible.

Other bikes to consider

Santa Cruz Megatower
Santa Cruz Nomad
Specialized Enduro
Specialized Enduro