Rear tire: 27.5×2.4.
Velopedia Bicycle Archive
2025 Santa Cruz Bronson S
Original specifications: 29″ front / 27.5″ rear wheels · 33.63 lbs / 15.25 kg published weight · geometry for 5 published sizes.
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At a glance
- Model year
- 2025
- Category
- Mountain
- Original MSRP
- $5,899.00
- Sizes
- S, M, L, XL, XXL
- Colors
- Translucent Root Beer, Kalimotxo
- Weight
- 33.63 lbs / 15.25 kg
- Geometry
- 5 manufacturer sizes
- In this record
- 21 specifications · 3 archived images · original MSRP · geometry
- Archive ID
- 900000312
Original buildCarbon Fiber · Mx
Frameset
| Frame Construction | Carbon C Frame |
|---|---|
| Frame Material | Carbon Fiber |
| Fork | FOX 36 Float Performance, Grip, 160mm |
| Rear Shock | FOX Float X Performance, 230x57.5 |
Drivetrain
| Shifters | SRAM GX Eagle, 12spd |
|---|---|
| Rear Derailleur | SRAM GX Eagle, 12spd |
| Crankset | SRAM GX Eagle 148 DUB 32t |
| Bottom Bracket | SRAM DUB 68/73mm Threaded BB |
| Cassette | SRAM XG1275 Eagle, 12spd, 10-50t |
| Chain | SRAM GX Eagle, 12spd |
Brakes
| Brakes | SRAM DB8 Stealth |
|---|
Cockpit & Contact Points
| Headset | Cane Creek 40 IS Integrated Headset |
|---|---|
| Handlebar | OneUp Aluminum Bar, 35mm Rise, 800mm |
| Stem | OneUp Stem, 42mm -or- Burgtec Enduro Stem, 42mm |
| Saddle | SDG Bel-Air V3, Lux-Alloy |
| Seatpost | OneUp Dropper Post, 31.6 |
Wheels & Tires
| Hubs | (F) DT Swiss 370, 15x110, 6-Bolt, 28h / (R) DT Swiss 370, 12x148, XD, 6-Bolt, 36t, 28h |
|---|---|
| Rims | (F) Reserve 30|TR AL -or- Raceface AR30 / (R) Reserve 30|TR AL -or- Raceface AR30 |
| Front Tire | Maxxis Assegai 29"x2.5", 3C, MaxxGrip, EXO+ |
| Rear Tire | Maxxis Minion DHR II 27.5"x2.4", 3C MaxxTerra, EXO+ |
| Wheel Size | Mx |
Geometry
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
All geometry measurements5 sizes · 13 measurements
| Measurement | S | M | L | XL | XXL |
|---|---|---|---|---|---|
| Seat tube | 380 mm | 405 mm | 430 mm | 460 mm | 500 mm |
| Top tube | 572 mm | 595 mm | 614 mm | 636 mm | 662 mm |
| Head tube | 110 mm | 120 mm | 130 mm | 150 mm | 160 mm |
| Head-tube angle | 64.2°/63.9° | 64.2°/63.9° | 64.2°/63.9° | 64.2°/63.9° | 64.2°/63.9° |
| Seat-tube angle | 77.6°/77.3° | 77.9°/77.6° | 78.2°/77.9° | 78.3°/78° | 78.4°/78.1° |
| Chainstay / rear center | 437 mm | 439 mm | 442 mm | 445 mm | 448 mm |
| Wheelbase | 1208 mm | 1240 mm | 1267 mm | 1299 mm | 1331 mm |
| Bottom-bracket drop | 29/32 | 29/32 | 29/32 | 29/32 | 29/32 |
| Bottom-bracket height | 344/341 | 344/341 | 344/341 | 344/341 | 344/341 |
| Reach | 435/432 | 460/457 | 480/478 | 500/498 | 525/523 |
| Stack | 623/625 | 632/634 | 641/643 | 659/661 | 668/670 |
| Standover height | 721 mm | 723 mm | 725 mm | 727 mm | 731 mm |
| Front center | 771 mm | 800 mm | 825 mm | 853 mm | 883 mm |
Dimensions as recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM = pedal turns per minute.
How it works
Ratio = chainring teeth ÷ rear sprocket teeth. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Bike-specific inspection checklist 22 checks based on 6 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: 2025 Santa Cruz Bronson S · Mountain · Published sizes: S, M, L, XL, XXL
Frame and fork
Inspect the frame and fork →Archived: Frame: Carbon C Frame · Fork: FOX 36 Float Performance, Grip, 160mm
Suspension
Evaluate the suspension →Archived: Fork: FOX 36 Float Performance, Grip, 160mm · Rear shock: FOX Float X Performance, 230x57.5
Drivetrain
Check drivetrain wear →Archived: Shifters: SRAM GX Eagle, 12spd · Rear derailleur: SRAM GX Eagle, 12spd · Crankset: SRAM GX Eagle 148 DUB 32t · Bottom bracket: SRAM DUB 68/73mm Threaded BB · Cassette: SRAM XG1275 Eagle, 12spd, 10-50t · Chain: SRAM GX Eagle, 12spd
Brakes
Inspect the brakes →Archived: Brakes: SRAM DB8 Stealth
Wheels and tires
Check wheels and tires →Archived: Wheel size: MX · Rims: (F) Reserve 30|TR AL -or- Raceface AR30 / (R) Reserve 30|TR AL -or- Raceface AR30 · Hubs: (F) DT Swiss 370, 15x110, 6-Bolt, 28h / (R) DT Swiss 370, 12x148, XD, 6-Bolt, 36t, 28h · Front tire: Maxxis Assegai 29"x2.5", 3C, MaxxGrip, EXO+ · Rear tire: Maxxis Minion DHR II 27.5"x2.4", 3C MaxxTerra, EXO+
Controls and contact points
Archived: Headset: Cane Creek 40 IS Integrated Headset · Handlebar: OneUp Aluminum Bar, 35mm Rise, 800mm · Stem: OneUp Stem, 42mm -or- Burgtec Enduro Stem, 42mm · Seatpost: OneUp Dropper Post, 31.6 · Saddle: SDG Bel-Air V3, Lux-Alloy
Before and during the test ride
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Gallery3 images
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





