Velopedia Bicycle Archive
2026 Transition Regulator CX Eagle 90 USA
Electric-assist bicycle from the Velopedia specification archive.
- Original MSRP
- $9,499.00
- Sizes
- S, M, L, XL
- Colors
- Clear Black Night, Frostberry
- Weight
- 48.1 lbs / 21.84 kg (Size MD)
- Geometry
- 8 manufacturer sizes · Ride analysis
- Archive ID
- 900000716
Current market
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Velopedia analysis
What the specifications mean
Suspension at both ends means fork and shock setup should be considered together; mismatched sag or rebound can leave the front and rear reacting very differently. The electric-assist system adds another maintenance layer, especially battery condition, charger compatibility, motor operation and any available diagnostic history. The 520% cassette range describes the available gearing more clearly than the component-group name alone.
Suspension setup
Front + rear
Fork and shock pressure, sag and rebound should be balanced and recorded independently.
E-bike system
Electric-assist
The drive system needs its own battery, charger, motor-control and diagnostic checks in addition to the bicycle components.
Gearing
520% cassette range
Calculated from the published 10–52-tooth sprocket span.
Frame material
Carbon / composite
Look for impact damage and clamp marks rather than metal-style dents or rust.
Used-bike inspection
If you’re buying this bike used
Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.
Follow the full used-bike inspection order →- FrameInspect the frame in bright light, especially around the head tube, bottom bracket, chainstays and clamped areas. Look for cracks, ripples, crushed sections or signs of a previous impact.Inspect the frame and fork →
- BrakesTest each brake separately and confirm it stops firmly and releases cleanly. Inspect the pads and braking surfaces for wear or contamination, and check the cables or hoses for damage.Inspect the brakes →
- E-bike systemConfirm the main battery charges with the correct charger, locks securely into its mount and has no case damage, swelling, corrosion or overheating marks. Power the bike on from cold, test every assist mode and ask for available battery-health and diagnostic records.Check the battery and electronics →
- SuspensionAsk when the fork and shock were last serviced. Check the stanchions for damage, look for oil at the seals, cycle both units through their travel and test the suspension pivots for play.Evaluate the suspension →
- Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads.Check wheels and tires →
Bike-specific inspection checklist 26 checks based on 7 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2026 Transition Regulator CX Eagle 90 USA · Electric-assist · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: Regulator CX Carbon 150mm · Fork: RockShox ZEB Ultimate(160mm)
Suspension
Evaluate the suspension →Archived: Fork: RockShox ZEB Ultimate(160mm) · Rear shock: RockShox SuperDeluxe Ultimate(205x60mm)
Drivetrain
Check drivetrain wear →Archived: Shifters: SRAM Eagle 90 MMX · Rear derailleur: SRAM Eagle 90 · Crankset: SRAM Eagle 90(150mm) · Cassette: SRAM XS 1275 (10-52t) · Chain: SRAM GX Eagle Transmission
Brakes
Inspect the brakes →Archived: Brakes: SRAM Maven Silver; Rotors: SRAM Centerline (200mm)
Wheels and tires
Check wheels and tires →Archived: Wheel size: Mixed · Rims: DT Swiss H 1900 Spline 30 · Hubs: DT Swiss Hybrid 370 · Front tire: Maxxis Assegai 3C MaxxGrip EXO+ (2.5) · Rear tire: Maxxis Minion DHRII 3C MaxxTerra DD (2.4)
Controls and contact points
Archived: Headset: FSA No.57E · Handlebar: Race Face TurbineSM(780x20)MD(780x40)LG/XL(800x40) · Stem: Race Face Aeffect R (40mm) · Seatpost: OneUp Dropper PostSM(150mm)MD(180mm)LG(210mm)XL(240mm) · Saddle: SDG Bel Air 3
E-bike system
Check the battery and electronics →Archived: Transition Regulator CX Eagle 90 USA · electric-assist identification
Before and during the test ride
Follow the full used-bike inspection order →Interpretation based on the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.
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Frameset
| Frame Construction | Regulator CX Carbon 150mm |
|---|---|
| Frame Material | Carbon Fiber |
| Fork | RockShox ZEB Ultimate(160mm) |
| Rear Shock | RockShox SuperDeluxe Ultimate(205x60mm) |
Drivetrain
| Shifters | SRAM Eagle 90 MMX |
|---|---|
| Rear Derailleur | SRAM Eagle 90 |
| Crankset | SRAM Eagle 90(150mm) |
| Cassette | SRAM XS 1275 (10-52t) |
| Chain | SRAM GX Eagle Transmission |
Brakes
| Brakes | SRAM Maven Silver; Rotors: SRAM Centerline (200mm) |
|---|
Cockpit & Contact Points
| Headset | FSA No.57E |
|---|---|
| Handlebar | Race Face TurbineSM(780x20)MD(780x40)LG/XL(800x40) |
| Stem | Race Face Aeffect R (40mm) |
| Saddle | SDG Bel Air 3 |
| Seatpost | OneUp Dropper PostSM(150mm)MD(180mm)LG(210mm)XL(240mm) |
Wheels & Tires
| Hubs | DT Swiss Hybrid 370 |
|---|---|
| Rims | DT Swiss H 1900 Spline 30 |
| Spokes | DT Swiss Hybrid 1 |
| Front Tire | Maxxis Assegai 3C MaxxGrip EXO+ (2.5) |
| Rear Tire | Maxxis Minion DHRII 3C MaxxTerra DD (2.4) |
| Wheel Size | Mixed |
Size-specific frame data
Geometry
Manufacturer-published geometry normalized for consistent archival comparison. Effective top tube and reach remain separate measurements because they describe different aspects of fit.
| Measurement | SM · High | SM · Low | MD · High | MD · Low | LG · High | LG · Low | XL · High | XL · Low |
|---|---|---|---|---|---|---|---|---|
| Seat tube | 375 mm | 375 mm | 400 mm | 400 mm | 440 mm | 440 mm | 470 mm | 470 mm |
| Effective top tube | 551 mm | 554 mm | 583 mm | 587 mm | 610 mm | 615 mm | 643 mm | 648 mm |
| Head tube | 105 mm | 105 mm | 115 mm | 115 mm | 125 mm | 125 mm | 135 mm | 135 mm |
| Head-tube angle | 64.5° | 64° | 64.5° | 64° | 64.5° | 64° | 64.5° | 64° |
| Chainstay / rear center | 442 mm | 444 mm | 442 mm | 444 mm | 448 mm | 450 mm | 448 mm | 450 mm |
| Wheelbase | 1201 mm | 1203 mm | 1235 mm | 1237 mm | 1271 mm | 1273 mm | 1305 mm | 1307 mm |
| Bottom-bracket drop | 20 mm | 25 mm | 20 mm | 25 mm | 20 mm | 25 mm | 20 mm | 25 mm |
| Reach | 425 mm | 420 mm | 455 mm | 450 mm | 480 mm | 475 mm | 510 mm | 505 mm |
| Stack | 623 mm | 628 mm | 632 mm | 637 mm | 641 mm | 646 mm | 651 mm | 656 mm |
Geometry source: Transition first-party SBG geometry table ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.
Geometry interpretation
What this geometry means
The manufacturer publishes more than one geometry configuration. Velopedia analyzes each labeled state separately while treating them as one chassis in archive comparisons.
SM geometry
Configuration
Riding position
The 425 mm reach and 623 mm stack sit in a moderate proportion, without a strong long-and-low or tall-and-short bias.
Handling tendencies
A 64.5° head angle combined with a 1201 mm wheelbase points to more stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with Low, this configuration reduces bottom-bracket drop by 5 mm, steepens the head angle by 0.5°, extends reach by 5 mm, and reduces stack by 5 mm.
Riding position
The 420 mm reach and 628 mm stack sit in a moderate proportion, without a strong long-and-low or tall-and-short bias.
Handling tendencies
A 64° head angle combined with a 1203 mm wheelbase points to more stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with High, this configuration increases bottom-bracket drop by 5 mm, slackens the head angle by 0.5°, shortens reach by 5 mm, and adds stack by 5 mm.
MD geometry
Configuration
Riding position
The 455 mm reach and 632 mm stack sit in a moderate proportion, without a strong long-and-low or tall-and-short bias.
Handling tendencies
A 64.5° head angle combined with a 1235 mm wheelbase points to more stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with Low, this configuration reduces bottom-bracket drop by 5 mm, steepens the head angle by 0.5°, extends reach by 5 mm, and reduces stack by 5 mm.
Riding position
The 450 mm reach and 637 mm stack sit in a moderate proportion, without a strong long-and-low or tall-and-short bias.
Handling tendencies
A 64° head angle combined with a 1237 mm wheelbase points to more stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with High, this configuration increases bottom-bracket drop by 5 mm, slackens the head angle by 0.5°, shortens reach by 5 mm, and adds stack by 5 mm.
LG geometry
Configuration
Riding position
At 480 mm of reach and 641 mm of stack, the frame is longer relative to its height, which generally creates more potential for a stretched, lower-front-end position.
Handling tendencies
A 64.5° head angle combined with a 1271 mm wheelbase points to more stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with Low, this configuration reduces bottom-bracket drop by 5 mm, steepens the head angle by 0.5°, extends reach by 5 mm, and reduces stack by 5 mm.
Riding position
At 475 mm of reach and 646 mm of stack, the frame is longer relative to its height, which generally creates more potential for a stretched, lower-front-end position.
Handling tendencies
A 64° head angle combined with a 1273 mm wheelbase points to more stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with High, this configuration increases bottom-bracket drop by 5 mm, slackens the head angle by 0.5°, shortens reach by 5 mm, and adds stack by 5 mm.
XL geometry
Configuration
Riding position
At 510 mm of reach and 651 mm of stack, the frame is longer relative to its height, which generally creates more potential for a stretched, lower-front-end position.
Handling tendencies
A 64.5° head angle combined with a 1305 mm wheelbase points to more stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with Low, this configuration reduces bottom-bracket drop by 5 mm, steepens the head angle by 0.5°, extends reach by 5 mm, and reduces stack by 5 mm.
Riding position
At 505 mm of reach and 656 mm of stack, the frame is longer relative to its height, which generally creates more potential for a stretched, lower-front-end position.
Handling tendencies
A 64° head angle combined with a 1307 mm wheelbase points to more stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with High, this configuration increases bottom-bracket drop by 5 mm, slackens the head angle by 0.5°, shortens reach by 5 mm, and adds stack by 5 mm.
Geometry describes frame proportions and likely tendencies, not a ride test. Rider proportions, cockpit setup, tires, suspension settings, wheel configuration, and component choices can materially change how a bicycle fits and feels.
Gallery
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.