HongFu FM138 Full suspension 29er MTB frame
Frame

HongFu FM138 Full suspension 29er MTB frame

Weight2080g
CategoryFrame

Reviews & Ratings

HongFu FM138

The HongFu FM138 is a 29er full-suspension XC/DC frame used by brands like Ridley (Raft) and TSW. It's available in standard (2080g for size L) and superlight (SL) versions (1930-1980g for size L), with carbon construction, PF92 bottom bracket, and 120mm rear travel (with 190x45mm shock). Pricing is around $650 for standard, $750 for SL, plus shipping and optional custom paint ($150+). It features modern geometry (67/76 head/seat tube angles, 470mm reach in L), UDH hanger, and internal cable routing. Purchase is via email/WhatsApp directly from HongFu.

AI Summary

Pros

  • Excellent value for money compared to similar frames like Carbonda FM909
  • High-quality carbon construction with good finish and durability reported by multiple users
  • Good pedaling efficiency with high anti-squat and minimal bobbing even without lockout
  • Capable suspension performance for XC/DC riding with 120mm travel
  • Quiet operation with no creaking issues when properly maintained

Cons

  • Limited water bottle capacity (max 500ml vertically, 750ml with sideloader, but may contact suspension link)
  • Potential brake compatibility issues, particularly with 4-piston calipers (SRAM Level reported problematic)
  • Long seat tube limits dropper post insertion depth for some riders
  • Long delivery times reported (up to 6 months in some cases)
  • Confusion around rear shock bushing sizes (8x16mm and 8x22-25mm needed, may require fitting)
  • XL size has additional reinforcement crosspiece that some find aesthetically unappealing

Key Points

  • Frame weight: Standard ~2080g (L), SL ~1930-1980g (L)
  • Price: $650 standard, $750 SL plus shipping ($255 to Finland example)
  • Travel: 120mm rear with 190x45mm shock, 100mm with 190x40mm
  • Geometry: 67° head tube, 76° seat tube, 470mm reach (L size)
  • Standards: PF92 BB, Boost 148mm rear, UDH hanger
  • Material: Carbon fiber
  • Purchase: Direct from HongFu via email/WhatsApp only
Purchase

Where to Buy

HongFu FM138 Full suspension 29er MTB frame

HongFu FM138 Full suspension 29er MTB frame

hongfu-bikes.com
· hongfu-bikes.com
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Specifications

Attributes

Frame TypeMTB Trail
Frame MaterialCarbon
Brake MountPost Mount Disc
Bottom Bracket
Seatpost31.6mm
Front Axle
Rear Axle
Max Tire Width (mm)61
Headset Type
Di2 Compatible
Max Chainring Size36
UDH CompatibleYes

Included Components

HongFu FM138 Full suspension 29er MTB frame
Frame
2,080g
Total Weight2,080g

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