Royce Union RTT Mountain Bike
- Size: 24 inches
- Wheel Size: 24 inches
- Minimum User Height: 29 inches
- Maximum Weight Recommendation: 250 pounds
Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A well equipped 24 inch wheel bike for smaller riders, worth it if your inseam matches the stated minimum, since the Shimano drivetrain is a step up from typical bikes at this wheel size.
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ASIN: B07CD58J97Category: Mountain Bikes
Overview
A 24 inch wheel mountain bike with a lightweight aluminum frame, Shimano 21 speed drivetrain, and a suspension fork, built for riders with at least a 29 inch inseam rather than full-size adults.
24 inch wheels put this in youth to smaller-adult territory rather than the 26 to 29 inch wheel sizes typical of full-size adult mountain bikes, so fit matters more than the spec sheet here. The drivetrain itself, a Shimano EZ Fire Plus trigger with TY300 rear derailleur, is the same tier of component found on entry adult bikes, just scaled to a smaller frame. Buyers should check the stated 29 inch minimum inseam against their own measurement before ordering, since wheel size dictates who this actually fits.
- 24 inch wheels, minimum 29 inch rider inseam
- Shimano 21 speed drivetrain with trigger shifting
- Suspension fork and machined alloy rims
- Aluminum frame with gloss silver finish
Who it's for
Fits younger or smaller riders who meet the 29 inch minimum inseam and want a bike with real Shimano shifting rather than a toy grade drivetrain. Not sized for a full-height adult looking for a standard 26 inch or 29 inch wheel mountain bike.
Pros and cons
- Shimano EZ Fire Plus shifting across 21 speeds
- Lightweight aluminum frame with suspension fork
- Machined alloy rims for better brake contact
- Ships with tools for assembly
- 24 inch wheels limit it to riders near the 29 inch minimum inseam, not full-size adults
Performance notes
The Shimano EZ Fire Plus trigger shifter and TY300 rear derailleur are what separate this from a bike with generic shifting, giving 21 speeds of indexed gear changes from one thumb and finger motion. Alloy linear pull brakes paired with machined rims are chosen for more consistent pad contact than standard steel rims, and the suspension fork is there to take the edge off bumps on trail riding rather than for aggressive downhill use.
Specifications
| Brand | Royce Union |
|---|---|
| Dimensions & fit | |
| Size | 24 incheslower than 63% of 49 mountain bikes |
| Wheel Size | 24 incheslower than 92% of 88 mountain bikes |
| Minimum User Height | 29 incheslower than 100% of 46 mountain bikes |
| Maximum Weight Recommendation | 250 poundslower than 72% of 48 mountain bikes |
| Item Weight | 30 poundslower than 97% of 39 mountain bikes |
| Capacity & performance | |
| Number Of Speeds | 21 |
| Bicycle Drivetrain Type | Derailleur |
| Bicycle Gear Shifter Type | Trigger |
| Age Range Description | Adult |
| Power & efficiency | |
| Power Source | Pedal |
| Construction & materials | |
| Frame Material Type | Aluminum |
| Wheel Material | Alloy |
| Seat Material | Polyurethane (PU) |
| Color | Matte Tangerine |
| Included components | |
| Unit Count | 1 |
| Included Components | Assembly Tools, Bicycle, Product Manual |
| Warranty & support | |
| Warranty Type | Limited |
| Other details | |
| Suspension Type | Front |
| Brake Style | Linear Pull |
| Bike Type | Mountain Bike |
| Intended Riding Terrain | Mountain Terrain, Unpaved Trails |
| Derailleur Configuration | Rear |
| Skill Level | Intermediate |
| Number of Handles | 1 |
| Gear Type | cassette |
| Specific Uses For Product | Trail |
| Style Name | Mountain |
| Item Type Name | Mountain Bike |
Closest rivals on specs
Kent Northwoods Aluminum Full Suspension Mountain Bike- Item Weight 30 vs 36 pounds (-17%)
Frequently asked questions
What size rider fits the Royce Union RTT?
The listing states a minimum inseam of 29 inches for this 24 inch wheel bike, so it suits smaller or younger riders rather than full-size adults.
What drivetrain does the Royce Union RTT use?
It uses a Shimano EZ Fire Plus trigger shifter with a TY300 rear derailleur, giving 21 speeds.
Does the RTT come with assembly tools?
Yes, the bike ships with tools included for assembly.