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 inches |
| Wheel Size | 29 inches |
| 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 |
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.