The LT RD301-D is a well-received all-road carbon frame from Chinese OEM Long Tang, offering good value with wide tire clearance and internal storage, but buyers should expect minor quality control issues and missing accessories.
Pros
- Wide tire clearance up to 38mm, allowing all-road/light gravel use
- Lightweight frame (970g for size 52 with paint)
- Threaded T47 bottom bracket for easy maintenance and stiffness
- Internal downtube storage for tools/tubes
Cons
- Missing seatpost wedge and rubber cover upon delivery
- No adapter for oval carbon fiber saddle rails (standard Ritchey one-bolt design, so adapter easily found)
- Internal storage cover finicky to close; requires careful alignment and firm pressure
- Downtube storage cover latch can be finicky or insecure; some units require sanding paint to lock properly
Key Facts
- Frame weight 970-1160g (size 52, with paint and hardware)
- Tire clearance up to 38mm (some users fit 40mm)
- Threaded T47 bottom bracket
Reviews & Ratings

The reviewer discusses the LT RD301-D frame from Long Tang, an OEM manufacturer in China. He built his bike around this carbon fiber frame, describing it as an all-arounder Allroad bike. He notes that the frame came with a fork, headset, seatpost, axles, and derailleur hanger. The build process was smooth, with the mechanic finding the frame easy to work with, no alignment issues, and a perfect bottom bracket fit. However, there were minor issues with missing finishing kit parts (seatpost wedge and rubber cover) and a finicky internal storage cover. Overall, he is pleased with the frame quality.
AI Summary
Pros
- Frame was easy to build with; mechanic said it was no different from major brand bikes
- No facing or drilling required; everything was true and aligned
- Bottom bracket fit was perfect (T47 threaded)
- Seatpost had no slippage
- Internal frame looked clean
- Long Tang was responsive when missing parts were needed
Cons
- Missing seatpost wedge and rubber cover for the seatpost junction upon delivery
- No adapter for oval carbon fiber saddle rails (standard Ritchey one-bolt design, so adapter easily found)
- Internal storage cover is finicky to close; requires careful alignment and firm pressure
Key Points
- Frame is carbon fiber from Long Tang (OEM in China), model LT RD301-D
- Designed as an all-arounder Allroad bike
- Comes with fork, headset, seatpost, front/rear axles, and derailleur hanger
- Uses T47 threaded bottom bracket
- Has internal storage in the down tube
The LT RD301-D is an all-road carbon frame from Longteng, offering a mix of aero features and wide tire clearance (up to 38mm). It weighs around 970-1160g for size 52, uses T800/T1000 carbon, and has a threaded T47 BB. The frame includes internal downtube storage and a proprietary aero seatpost. Price is around $450-530 for frame/fork/seatpost. Users report comfortable ride, neutral handling, and good acceleration, but note issues with the storage cover latch, rear thru-axle length, and missing accessories like seatpost wedge and rubber cover.
AI Summary
Pros
- Wide tire clearance up to 38mm, allowing for all-road/light gravel use
- Lightweight frame (970g for size 52 with paint)
- Threaded T47 bottom bracket for easy maintenance and stiffness
- Internal downtube storage for tools/tubes
- Good value for the price ($450-530 for frame/fork/seatpost)
- Custom paint options available at reasonable cost
- Comfortable and stable ride with neutral handling
- Good acceleration and stiffness, especially from BB area
- Compatible with FSA ACR and SMR headset systems
Cons
- Downtube storage cover latch can be finicky or insecure; some units require sanding paint to lock properly
- Rear thru-axle length issues causing wheel play; first batch had wrong size
- Missing accessories: seatpost wedge, rubber cover, storage bag, Di2 battery holder
- Proprietary aero seatpost with limited offset options; no zero-offset available from Longteng
- Headset spacer rubbing against frame; requires modification or shims
- Small chainring clearance issues with wide downtube; may need spacers or gravel crank
- Some units have uneven BB internal surface, though seller claims it's safe
- No serial number on frame
- Seatpost wedge and other parts may be mismatched or missing on delivery
Key Points
- Frame weight: 970-1160g (size 52, with paint and hardware)
- Tire clearance: up to 38mm (some users fit 40mm)
- Bottom bracket: T47 threaded
- Carbon layup: mix of T800 and T1000
- Price: $450-530 for frame/fork/seatpost
- Available sizes: 47, 50, 52, 54, 56, 58 (some sizes limited)
- Seatpost offset: ~20mm, proprietary aero shape (26mm front, 45.5mm side)
- Headset standard: FSA ACR compatible, also supports SMR
- Storage: downtube compartment with magnetic latch
- Custom paint: available for additional cost ($85-100)
Where to Buy

LT Bikes Full Carbon All Terrian Road Bike Frame RD301-D
Specifications
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