
TransitionRegulator SX Eagle 90
- Motor
- Bosch Performance Line SX60 Nm; 600 W peak
- Battery
- 400 WhBosch CompactTube; optional 250 Wh PowerMore range extender
- Travel F / R
- 160 / 150 mm
- Wheels
- Mullet 29" / 27.5"
- Frame
- Carbon
- Weight
- 18.8 kgManufacturer figure (size M)
Overview
The Transition Regulator SX Eagle 90 (€8,999) is the only build of the Regulator SX: Bosch Performance Line SX with 400 Wh, RockShox Lyrik Ultimate fork, RockShox SuperDeluxe Ultimate shock, SRAM Eagle 90 and SRAM Maven Silver brakes. Claimed weight is 18.78 kg.
The Regulator SX is the lightweight version of Transition's carbon all-mountain Regulator: same mixed-wheel chassis with 150 mm of GiddyUp rear travel, a 160 mm fork and a High/Low flip chip.
It runs the Bosch Performance Line SX motor (60 Nm, 600 W peak) with a 400 Wh CompactTube battery; the optional 250 Wh PowerMore range extender raises capacity to 650 Wh. The single Eagle 90 build weighs a claimed 18.78 kg (size MD).
- Bosch Performance Line SX: 60 Nm, 600 W peak
- 400 Wh battery, 650 Wh with PowerMore extender
- 150 mm rear / 160 mm fork, mixed wheels
- Claimed 18.78 kg (size MD)
Gallery
Photos: Transition
Full specifications
Frame & suspension
- Frame
- Regulator SX Carbon 150mm
- Wheel size
- Mixed
- Rear shock
- RockShox SuperDeluxe Ultimate (205x60mm)
- Fork
- RockShox Lyrik Ultimate (160mm)
- Headset
- FSA No.57E
E-system
- Motor
- Bosch Performance Line SX (BDU31)
- Battery
- Bosch CompactTube (400wh)
- Display
- Bosch Kiox 400C
- Remote
- Bosch Wireless Mini Remote
Drivetrain
- Shifter
- SRAM Eagle 90 MMX
- Rear derailleur
- SRAM Eagle 90
- Cassette
- SRAM XS 1275 (10-52t)
- Chain
- SRAM GX Eagle Transmission
- Crankset
- RaceFace ERA Carbon E-MTB (160mm)
- Chainring
- SRAM XX T-Type Direct Mount (32t)
- Chainguide
- Transition Integrated Top Guide
Brakes
- Brakes
- SRAM Maven Silver
- Rotors
- SRAM Centerline (200/180mm)
Wheels & tyres
- Rims
- DT Swiss XM 1700 Spline 30
- Spokes
- DT Swiss Competition Race
- Hubs
- DT Swiss 350 Ratchet DEG 72 DF - Anti Kickback
- Front tyre
- Maxxis Assegai 3C MaxxGrip EXO+ (2.5)
- Rear tyre
- Maxxis Minion DHRII 3C MaxxTerra EXO+ (2.4)
Cockpit
- Stem
- Race Face Aeffect R (40mm)
- Handlebar
- Race Face Era SM(780x20) MD(780x40) LG/XL(800x40)
- Grips
- ODI Elite Flow Lock-On
- Saddle
- SDG Bel Air 3 LUX
- Seatpost
- OneUp Dropper Post SM(150mm) MD(180mm) LG(210mm) XL(240mm)
Other
- Included
- Bosch Charger, Tubeless Valves & Sealant
- Weight
- 41.4 lbs / 18.78 kg (Size MD)
Manufacturer specification — source. Specs and prices can change; check with the brand or your dealer.
Regulator SX geometry
| Size | S | M | L | XL |
|---|---|---|---|---|
| AReach | 425 mm | 455 mm | 480 mm | 510 mm |
| BStack | 623 mm | 632 mm | 641 mm | 651 mm |
| CEffective Top Tube Length | 551 mm | 583 mm | 610 mm | 643 mm |
| DSeat Tube Length | 375 mm | 400 mm | 440 mm | 470 mm |
| EEffective Seat Tube Angle | 78.8° | 78.5° | 78.2° | 77.9° |
| Saddle Height For Effective Seat Tube Angle | 600° | 660° | 720° | 780° |
| Actual Seat Tube Angle | 75° | 75° | 75° | 75° |
| Seat Tube Offset At Bottom Bracket | 41 mm | 41 mm | 41 mm | 41 mm |
| FHead Tube Length | 105 mm | 115 mm | 125 mm | 135 mm |
| GHead Tube Angle | 64.5° | 64.5° | 64.5° | 64.5° |
| HChainstay Length | 442 mm | 442 mm | 448 mm | 448 mm |
| IWheelbase | 1201 mm | 1235 mm | 1271 mm | 1305 mm |
| JBottom Bracket Drop (Front) | 25 mm | 25 mm | 25 mm | 25 mm |
| JBottom Bracket Drop (Rear) | 5 mm | 5 mm | 5 mm | 5 mm |
| KEstimated Bottom Bracket Height | 350 mm | 350 mm | 350 mm | 350 mm |
Where two values are given: High / Low flip-chip position. Source: Transition.
Regulator SX Eagle 90: FAQ
How much does the Transition Regulator SX Eagle 90 cost?
€8,999 (RRP Germany (transitionbikes.com EU store), VAT incl.). Prices vary by country and dealer.
How much does the Transition Regulator SX Eagle 90 weigh?
Transition quotes 18.8 kg.
What motor and battery does the Transition Regulator SX Eagle 90 have?
Bosch Performance Line SX (60 Nm; 600 W peak). 400 Wh battery — bosch CompactTube; optional 250 Wh PowerMore range extender.
How much suspension travel does the Transition Regulator SX Eagle 90 have?
160 mm at the fork and 150 mm at the rear, on mullet 29" / 27.5" wheels.
What sizes does the Transition Regulator SX Eagle 90 come in?
S, M, L, XL. Check the geometry table to compare reach and stack between sizes.





