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Started in 1985 by Matt "Mayhem" Biolos, Lost brought a rebellious, DIY energy to shortboard design that's since become mainstream performance thinking. Biolos is known for wide, user-friendly high-performance shapes that deliver more speed and more fun from average waves, ridden by names like Kolohe Andino and Carissa Moore.
Our recommended FCS II fin matches for popular Mayhem board models.
Our recommended FCS II fin matches for popular Mayhem board models.
CHOOSE YOUR BOARD
QUIVER KILLER XL
PAIR WITH
FCS II HARLEY QUAD
XXL
Harley's XXL template delivers maximum speed and drive for powerful surfers.
BIG RIG ROUND
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
SPEED DEMON
PAIR WITH
FCS II MAYHEM PIVOT TRI
SML, MED & LRG
A refined, high-performance template, built for surfers who want speed, tight turns, and directional changes.
FORMULA 1 SQUASH
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
FORMULA 1 ROUND
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
RNF TWINZER
PAIR WITH
FCS II POWER TWIN + 1
S-M & M-L
Highest-area twin in the range. Moderate sweep, full tip and long base deliver drive and speed.
MINI DRIVER
PAIR WITH
FCS II KA TRI SET
GROM, MED & LRG
A lively mix of drive, pivot and tial release. Build for fast, explosive turns and airs.
MOD QUAD
PAIR WITH
FCS II MAYHEM PIVOT TRI-QUAD
MED & LRG
A refined, high-performance template, built for surfers who want speed, tight turns, and directional changes.
SABOTAJ
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
RAD ZAPPER
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
OG PUDDLE JUMPER
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
THE RIPPER ROUND
PAIR WITH
FCS II MAYHEM PIVOT TRI
SML, MED, LRG
A refined, high-performance template, built for surfers who want speed, tight turns, and directional changes.
QUIVER KILLER
PAIR WITH
FCS II MAYHEM PIVOT TRI
SML, MED & LRG
A refined, high-performance template, built for surfers who want speed, tight turns, and directional changes.
SUB DRIVER 3.0 SWALLOW
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
RNF96 KINGFISH
PAIR WITH
FCS II MR TWIN + 1
M-L
MR's twin + stabiliser template. Exceptional pivot off the top, while centre fin adds control.
BIG RIG DRIVER
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
THE RIPPER BLACK SHEEP
PAIR WITH
FCS II MAYHEM PIVOT TRI
SML, MED & LRG
A refined, high-performance template, built for surfers who want speed, tight turns, and directional changes.
3.0 STUB THUMB DRIVER BLACK SHEEP
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
3.0 STUB DRIVER BLACK SHEEP
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
RNF96 BLACK SHEEP
PAIR WITH
FCS II MR TWIN + 1
M-L
MR's twin + stabiliser template. Exceptional pivot off the top, while centre fin adds control.
PARTY PLATTER
PAIR WITH
FCS II HARLEY QUAD
XXL
Harley's XXL template delivers maximum speed and drive for powerful surfers.
DRIVER 3.0 ROUND
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
DRIVER 3.0 SQUASH
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
PUDDLE JUMPER PRO
PAIR WITH
FCS II MAYHEM PIVOT TRI
SML, MED & LRG
A refined, high-performance template, built for surfers who want speed, tight turns, and directional changes.
RAD RIPPER
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
SMOOTH OPERATOR
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
PISCES
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
CALIFORNIA TWIN
PAIR WITH
MR TWIN + 1
M-L
MR's twin + stabiliser template. Exceptional pivot off the top, while centre fin adds control.
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SPEED DEMON
PAIR WITH
FCS II MAYHEM PIVOT TRI
SML, MED & LRG
A refined, high-performance template, built for surfers who want speed, tight turns, and directional changes.
FORMULA 1 SQUASH
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
FORMULA 1 ROUND
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
RNF TWINZER
PAIR WITH
FCS II POWER TWIN + 1
S-M & M-L
Highest-area twin in the range. Moderate sweep, full tip, and long base deliver drive and speed.
MINI DRIVER
PAIR WITH
FCS II KA TRI FIN SET
SML, MED & LRG
A lively mix of drive, pivot and tial release. Build for fast, explosive turns and airs.
MOD QUAD
PAIR WITH
FCS II MAYHEM PIVOT TRI-QUAD
MED & LRG
A refined, high-performance template, built for surfers who want speed, tight turns, and directional changes.
SABOTAJ
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
RAD ZAPPER
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
OG PUDDLE JUMPER
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
THE RIPPER ROUND
PAIR WITH
FCS II MAYHEM PIVOT TRI
SML, MED & LRG
A refined, high-performance template, built for surfers who want speed, tight turns, and directional changes.
QUIVER KILLER
PAIR WITH
FCS II MAYHEM PIVOT TRI
SML, MED & LRG
A refined, high-performance template, built for surfers who want speed, tight turns, and directional changes.
SUB DRIVER 3.0 SWALLOW
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
RNF96 KINGFISH
PAIR WITH
FCS II MR TWIN + 1
M-L
MR's twin + stabiliser template. Exceptional pivot off the top, while the centre fin adds control.
BIG RIG DRIVER
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
THE RIPPER BLACK SHEEP
PAIR WITH
FCS II MAYHEM PIVOT TRI
SML, MED & LRG
A refined, high-performance template, built for surfers who want speed, tight turns, and directional changes.
3.0 STUB THUMB DRIVER BLACK SHEEP
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED, LRG
A refined, high-performance template, built to perform across a wide range of boards.
3.0 STUB DRIVER BLACK SHEEP
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
RNF96 BLACK SHEEP
PAIR WITH
FCS II MR TWIN + 1
M-L
MR's twin + stabiliser template. Exceptional pivot off the top, while centre fin adds control.
DRIVER 3.0 SQUASH
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
PUDDLE JUMPER PRO
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
RAD RIPPER
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
SMOOTH OPERATOR
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
PISCES
PAIR WITH
FCS II MAYHEM DRIVER TRI
SML, MED & LRG
A refined, high-performance template, built to perform across a wide range of boards.
CALIFORNIA TWIN
PAIR WITH
FCS II MR TWIN + 1
M-L
MR's twin + stabiliser template. Exceptional pivot off the top, while centre fin adds control.
