Velopedia Bicycle Archive

2021 Rocky Mountain Altitude Alloy 70

Original specifications: 29"; 27.5" wheels · 35.486 LBS|16.13 KGS published weight · geometry for 4 published sizes.

Share owner experience

At a glance

Archive #900004615

Model year: 2021
Category: Mountain
Archived price: $5,479.00Source snapshot; list or sale price, not a current offer.
Sizes: S, M, L, XL
Colors: Black/Brown
Weight: 35.486 LBS|16.13 KGS
Geometry: 4 manufacturer sizes
In this record: 22 specifications · archived image · archived price · geometry

Original buildAluminum · 29"; 27.5"

Manufacturer catalog

Published sizes and colors

4 sizes · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

SMLXL

Published colors

Black/Brown

Frameset

Frame Construction	FORM™ Alloy. Full Sealed Cartridge Bearings. Press Fit BB. Internal Cable Routing. 2-Bolt ISCG05 Tabs. RIDE-9™ Adjustable Geometry. 2 Position Axle. 160mm Travel. FORM™ Alloy Rear Triangle
Frame Material	Aluminum
Fork	Fox 38 Float EVOL GRIP2 Factory Series 170mm \| 27.5 = 37mm Offset \| 29 = 44mm Offset
Rear Shock	Fox Float X2 Factory \| Sealed Bearing Eyelet \| SM = 210x55mm \| MD - LG - XL = 230x60mm

Drivetrain

Shifters	Shimano XT
Rear Derailleur	Shimano XT
Crankset	Race Face Aeffect R Cinch \| 27.5 = 34T \| 29 = 32T
Bottom Bracket	Shimano SM-BBMT500
Cassette	Shimano SLX 10-51T
Chain	Shimano M7100

Brakes

Brakes	Shimano XT Trail 4 Piston

Cockpit & Contact Points

Headset	FSA Orbit NO.57E
Handlebar	Rocky Mountain AM 780mm
Stem	Rocky Mountain 35 AM \| 40mm
Saddle	WTB Volt Race 142
Seatpost	Race Face Aeffect R Dropper 30.9mm \| Shimano MT500 Remote \| SM = 125mm \| MD = 150mm \| LG - XL = 175mm

Wheels & Tires

Hubs	Front: Rocky Mountain Sealed Boost 15mm; Rear: DT Swiss 370 Boost 148mm
Rims	Race Face AR 30 / Tubeless Ready - Tape / Valves Incl
Spokes	DT Swiss Competition 2.0/1.8/2.0
Front Tire	Maxxis Assegai 2.5 WT 3C MaxxGrip EXO+ Tubeless Ready
Rear Tire	Maxxis Minion DHR II 2.4 WT 3C MaxxTerra EXO+ Tubeless Ready
Wheel Size	29"; 27.5"

Geometry

4 sizes · 12 measurements

Frame measurements by size.

All geometry measurements45 size / setup combinations · 12 measurements

Measurement	MD · 29″ · POS.1 Slack	LG · 29″ · POS.1 Slack	XL · 29″ · POS.1 Slack	MD · 29″ · POS.2	LG · 29″ · POS.2	XL · 29″ · POS.2	MD · 29″ · POS.3	LG · 29″ · POS.3	XL · 29″ · POS.3	MD · 29″ · POS.4	LG · 29″ · POS.4	XL · 29″ · POS.4	MD · 29″ · POS.5 Neutral	LG · 29″ · POS.5 Neutral	XL · 29″ · POS.5 Neutral	MD · 29″ · POS.6	LG · 29″ · POS.6	XL · 29″ · POS.6	MD · 29″ · POS.7	LG · 29″ · POS.7	XL · 29″ · POS.7	MD · 29″ · POS.8	LG · 29″ · POS.8	XL · 29″ · POS.8	MD · 29″ · POS.9 Steep	LG · 29″ · POS.9 Steep	XL · 29″ · POS.9 Steep	SM · 27.5″ · POS.1 Slack	MD · 27.5″ · POS.1 Slack	SM · 27.5″ · POS.2	MD · 27.5″ · POS.2	SM · 27.5″ · POS.3	MD · 27.5″ · POS.3	SM · 27.5″ · POS.4	MD · 27.5″ · POS.4	SM · 27.5″ · POS.5 Neutral	MD · 27.5″ · POS.5 Neutral	SM · 27.5″ · POS.6	MD · 27.5″ · POS.6	SM · 27.5″ · POS.7	MD · 27.5″ · POS.7	SM · 27.5″ · POS.8	MD · 27.5″ · POS.8	SM · 27.5″ · POS.9 Steep	MD · 27.5″ · POS.9 Steep
Seat tube	420 mm	445 mm	480 mm	420 mm	445 mm	480 mm	420 mm	445 mm	480 mm	420 mm	445 mm	480 mm	420 mm	445 mm	480 mm	420 mm	445 mm	480 mm	420 mm	445 mm	480 mm	420 mm	445 mm	480 mm	420 mm	445 mm	480 mm	380 mm	420 mm	380 mm	420 mm	380 mm	420 mm	380 mm	420 mm	380 mm	420 mm	380 mm	420 mm	380 mm	420 mm	380 mm	420 mm	380 mm	420 mm
Effective top tube	611 mm	640 mm	673 mm	611 mm	639 mm	672 mm	610 mm	639 mm	672 mm	610 mm	639 mm	672 mm	610 mm	638 mm	671 mm	609 mm	638 mm	671 mm	609 mm	638 mm	671 mm	609 mm	637 mm	670 mm	608 mm	637 mm	670 mm	580 mm	607 mm	580 mm	607 mm	579 mm	606 mm	579 mm	606 mm	579 mm	603 mm	578 mm	605 mm	578 mm	—	578 mm	605 mm	577 mm	605 mm
Head tube	95 mm	110 mm	125 mm	95 mm	110 mm	125 mm	95 mm	110 mm	125 mm	95 mm	110 mm	125 mm	95 mm	110 mm	125 mm	95 mm	110 mm	125 mm	95 mm	110 mm	125 mm	95 mm	110 mm	125 mm	95 mm	110 mm	125 mm	100 mm	110 mm	100 mm	110 mm	100 mm	110 mm	100 mm	110 mm	100 mm	110 mm	100 mm	110 mm	100 mm	110 mm	100 mm	110 mm	100 mm	110 mm
Head-tube angle	64.4°	64.4°	64.4°	64.7°	64.7°	64.7°	64.8°	64.8°	64.8°	64.8°	64.8°	64.8°	65°	65°	65°	65.2°	65.2°	65.2°	65.2°	65.2°	65.2°	65.4°	65.4°	65.4°	65.5°	65.5°	65.5°	64.4°	64.4°	64.7°	64.6°	64.8°	64.8°	64.8°	64.8°	65°	65°	65.2°	65.2°	65.2°	65.2°	65.4°	65.4°	65.5°	65.5°
Seat-tube angle	75.4°	75.4°	75.4°	75.7°	75.7°	75.7°	75.8°	75.8°	75.8°	75.8°	75.8°	75.8°	76°	76°	76°	76.2°	76.2°	76.2°	76.2°	76.2°	76.2°	76.4°	76.4°	76.4°	76.5°	76.5°	76.5°	75.4°	75.4°	75.7°	75.6°	75.8°	75.8°	75.8°	75.8°	76°	76°	76.2°	76.2°	76.2°	76.2°	76.4°	76.4°	76.5°	76.5°
Chainstay / rear center	438 - 449	438 - 449	438 - 449	438 - 449	438 - 449	438 - 449	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	437 - 448	436 - 447	436 - 447	436 - 447	436 - 447	436 - 447	436 - 447	428 - 439	428 - 439	428 - 439	428 - 439	428 - 439	428 - 439	427 - 438	427 - 438	427 - 438	427 - 438	427 - 438	427 - 438	427 - 438	427 - 438	426 - 437	426 - 437	425 - 436	426 - 437
Wheelbase	1218 mm	1249 mm	—	1218 mm	1249 mm	1285 mm	1217 mm	1249 mm	1285 mm	1217 mm	1249 mm	1285 mm	1217 mm	1249 mm	1285 mm	1217 mm	1248 mm	1285 mm	1217 mm	1248 mm	1285 mm	1217 mm	1248 mm	1284 mm	1216 mm	1248 mm	1284 mm	1172 mm	1201 mm	1172 mm	1201 mm	1171 mm	1200 mm	1171 mm	1200 mm	1171 mm	1199 mm	1170 mm	1200 mm	1170 mm	1200 mm	1170 mm	1199 mm	1169 mm	1198 mm
Bottom-bracket drop	34 mm	34 mm	34 mm	32 mm	32 mm	32 mm	30 mm	30 mm	30 mm	29 mm	30 mm	30 mm	27 mm	27 mm	27 mm	25 mm	25 mm	25 mm	25 mm	25 mm	25 mm	22 mm	22 mm	22 mm	19 mm	19 mm	19 mm	20 mm	19 mm	18 mm	17 mm	15 mm	15 mm	15 mm	14 mm	12 mm	12 mm	9 mm	10 mm	9 mm	10 mm	7 mm	7 mm	4 mm	5 mm
Reach	449 mm	474 mm	504 mm	451 mm	476 mm	506 mm	453 mm	478 mm	508 mm	453 mm	478 mm	508 mm	455 mm	480 mm	510 mm	457 mm	482 mm	512 mm	457 mm	482 mm	512 mm	459 mm	484 mm	514 mm	461 mm	486 mm	516 mm	423 mm	449 mm	425 mm	451 mm	428 mm	453 mm	428 mm	453 mm	430 mm	455 mm	432 mm	457 mm	432 mm	457 mm	434 mm	459 mm	437 mm	461 mm
Stack	624 mm	638 mm	652 mm	623 mm	637 mm	650 mm	622 mm	635 mm	649 mm	622 mm	635 mm	649 mm	620 mm	634 mm	647 mm	619 mm	632 mm	646 mm	619 mm	632 mm	646 mm	617 mm	631 mm	644 mm	616 mm	629 mm	643 mm	601 mm	610 mm	599 mm	608 mm	598 mm	607 mm	598 mm	607 mm	596 mm	606 mm	595 mm	604 mm	595 mm	604 mm	593 mm	602 mm	591 mm	601 mm
Standover height	813 mm	813 mm	813 mm	814 mm	814 mm	814 mm	815 mm	815 mm	815 mm	815 mm	815 mm	815 mm	816 mm	816 mm	816 mm	817 mm	817 mm	817 mm	817 mm	817 mm	817 mm	818 mm	818 mm	818 mm	819 mm	819 mm	819 mm	767 mm	797 mm	769 mm	800 mm	770 mm	802 mm	770 mm	802 mm	771 mm	804 mm	772 mm	806 mm	772 mm	807 mm	773 mm	809 mm	774 mm	812 mm
Wheel size	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5	27.5

Dimensions as recorded.

Gearing

Lower gears help on climbs. Higher gears suit higher speeds.

Pedal cadence

RPM

Speed units

RPM = pedal turns per minute.

MD · 29″, LG · 29″, XL · 29″32T · 10–51T

Lowest0.63:1 Highest3.20:1 Total range510%

Estimated speed At 90 RPM Lowest gear4.9 mph Highest gear25.1 mph

Rear tire: 2.4″ + 29-inch.

SM · 27.5″, MD · 27.5″34T · 10–51T

Lowest0.67:1 Highest3.40:1 Total range510%

Estimated speed At 90 RPM Lowest gear5.0 mph Highest gear25.3 mph

Rear tire: 2.4″ + 27.5-inch.

How it works

Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.

Speeds are estimates from tire size and pedal cadence. Actual speeds vary.

Try other gearing

Try your current gearingChanged tires or gears? Calculate your setup.

Your changes apply to this calculation. The archived build stays unchanged.

Original size / build

Gears Drivetrain

Front teeth Smallest rear teeth Largest rear teeth

Use up to three front tooth counts, separated by /. For one rear sprocket, enter the same count twice.

Rear tire

Rear tire marking

Apply the marking on your rear tire or edit its dimensions below. Older or fractional inch sizes need the ISO marking (e.g. 37-590).

Rim diameter (BSD, mm) Tire width (mm)

For 32-622, width is 32 mm and rim diameter is 622 mm. Use the rear tire on mixed-wheel bikes. Leave both fields empty to compare ratios only.

Cadence (RPM) Speed units

Gear, dimension and cadence changes update results automatically.

Gearing comparison
Measure	Original	Your setup
Lowest ratio	—	—
Highest ratio	—	—
Total range	—	—
Lowest-gear speed	—	—
Highest-gear speed	—	—

Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.

Parts & serviceability

Find replacement parts

Original specifications

Chain · Original

Shimano M7100

Search Amazon Search eBay

Retailer offers

Shimano SLX CN-M7100 12-Speed Chain Silver, 126 Links

Model match

Competitive Cyclist ↗$39.00

Cassette · Original

Shimano SLX 10-51T

Search Amazon Search eBay

Front tire · Original

Maxxis Assegai 2.5 WT 3C MaxxGrip EXO+ Tubeless Ready

Search Amazon Search eBay

More parts (6)Fewer parts

Rear tire · Original

Maxxis Minion DHR II 2.4 WT 3C MaxxTerra EXO+ Tubeless Ready

Search Amazon Search eBay

Bottom bracket · Original

Shimano SM-BBMT500

Search Amazon Search eBay

Saddle · Original

WTB Volt Race 142

Search Amazon Search eBay

Rear derailleur · Original

Shimano XT Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.

Search Amazon Search eBay

Shifters · Original

Shimano XT Before ordering: Confirm whether the drivetrain is mechanical or electronic before ordering.

Search Amazon Search eBay

Headset · Original

FSA Orbit NO.57E

Search Amazon Search eBay

Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.

Parts and service referenceQuick reference before buying parts

Archived specifications for reference. Check the fitted parts before ordering.

Bottom bracket / shell: Shimano SM-BBMT500

Have you owned this model?Help preserve its real-world history by sharing your owner experience.

Share the details that would help another rider understand how this model fits, rides and holds up over time. Velopedia reviews every contribution before publication.

Display name Required Email address Required · private Ownership Required When or how long you owned it Required Frame size Required Primary type of riding Required Rider height Optional

Overall owner experience Required · at least 120 characters0 of 120 minimum characters Would you own one again? Optional

Add fit, maintenance and buyer detailsOptional · five additional fields

Fit and sizing observations Optional Long-term strengths Optional Problems or recurring maintenance Optional Parts replaced or upgraded Optional What a used buyer should inspect Optional

Your contribution goes directly to Velopedia’s private review queue. We’ll email an optional confirmation link plus a private edit and withdrawal link, but you do not need to confirm your email before an administrator can review or approve the submission.

Already contributed? Send me a fresh private edit link

For privacy, Velopedia shows the same confirmation whether or not an experience exists.

Checking current listings…

Find this bike on eBay

Search eBay US; check the model year, size and installed components. We may earn a commission from purchases.

Search 2021 model Search all years

Campaign

Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

2021 Rocky Mountain Altitude Alloy 70