Eastern Bikes Alpaka 29 Mountain Bike
- Size: 19 inches
- Wheel Size: 29 inches
- Maximum Weight Recommendation: 300 pounds
- Suspension Type: Front
Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
The frame earns real praise, including from a bike mechanic who kept it after swapping out weaker parts, but be prepared for possible issues with the stock shifter, derailleur, or rear brake.
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ASIN: B09L5D44N1Category: Mountain Bikes
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Overview
The Alpaka is a hardtail mountain bike from Eastern Bikes built on a hydroformed 6061 aluminum frame with 130mm of front suspension travel, a 9-speed drivetrain, and sealed bearing hubs on 29x2.2 inch tires. It comes in four frame sizes and carries a 5 year frame warranty.
- Hydroformed 6061 aluminum frame, 4 available sizes
- 130mm travel front suspension fork
- 9-speed drivetrain with sealed bearing hubs
- 29x2.2 inch tires, 5 year frame warranty
Who it's for
Fits riders who want a solid aluminum hardtail frame at this price and don't mind troubleshooting or upgrading the stock derailleur, shifter, or brakes if needed. Less suited to buyers who want a bike that needs zero mechanical attention after assembly.
Pros and cons
- Aluminum frame holds up well to daily and long-distance trail riding
- 5 year frame warranty backed by responsive customer service in at least one case
- 29x2.2 tires and front suspension suit rocky, rooted trails
- Available in four frame sizes
- Some units shipped with loose cranks that would not stay tightened
- Rear hydraulic brake reported to leak and fail on one unit
- Derailleur and shifter described by one mechanic reviewer as unusable out of the box
- Generic assembly instructions described as confusing
Performance notes
The 6061 aluminum frame and 130mm front suspension fork are built for rocky, rooted trail riding, and multiple owners logged multi-hour rides without frame, wheel, or bottom bracket issues. Component quality was the inconsistent part: reported problems ranged from a rear brake that leaked and failed to a derailleur and shifter that needed replacement before the bike would shift cleanly.
Specifications
| Brand | Eastern Bikes |
|---|---|
| Dimensions & fit | |
| Size | 19 incheslower than 81% of 49 mountain bikes |
| Wheel Size | 29 incheshigher than 84% of 88 mountain bikes |
| Maximum Weight Recommendation | 300 pounds |
| Capacity & performance | |
| Number Of Speeds | 9 |
| 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 | Aluminum |
| Color | Grey |
| Warranty & support | |
| Warranty Type | Limited |
| Other details | |
| Suspension Type | Front |
| Bike Type | Mountain Bike |
| Intended Riding Terrain | Mountain Terrain |
| Derailleur Configuration | Rear |
| Skill Level | Intermediate |
| Is Assembly Required | Yes |
| Number of Handles | 1 |
| Specific Uses For Product | Trail |
| Style Name | Mountain Bike |
| Additional Features | Lightweight |
| Item Type Name | Alpaka |
| Theme | Mountain Biking |
Closest rivals on specs
Frequently asked questions
Is the Eastern Bikes Alpaka good for long trail rides?
Several owners report riding it on rocky, rooted trails for two or more hours at a time without frame or wheel issues.
Are the stock components reliable?
Reports are mixed. Some owners had no issues, while others, including one self-described bike mechanic, needed to replace the shifter, derailleur, or bleed the brakes.