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Chainsaw Bars

Pro Top Bars

protop_bars

GB Pro-Top is a durable replaceable sprocket nose bar designed and built for demanding professional users. Like other GB professional-use bars, the Pro-Top is ideally suited for high-speed / high-powered chainsaws where light weight and extreme durability are required. Pro-Top bars are precision engineered from high-tech, lightweight alloy steel for extra-long life and easy maneuverability.

The Pro-Top's sprocket nose assembly supports the saw chain as it rounds the nose. This reduces friction, allowing greater chain tension and up to 25% more cutting power compared to professional hard nose bars. These wear-reducing attributes allow a considerably narrower nose profile, making the Pro-Top especially well-suited for boring and/or limbing applications.

The time-tested Pro-Top nose cartridge is incredibly strong, with titanium alloy steel side- plates, precision Swiss bearings, specially-hardened sprocket and unique self-locking feature. During hardening, the nose side plates are injected with Carbon Nitride, which guarantees that Pro-Top is the hardest-wearing replaceable sprocket nose in the world.

Its body is equally tough. Pro-Top is crafted from a solid, high-carbon steel alloy that is specially heat-treated and tempered for super-long life. Its rails are extraordinarily strong, thanks to GB's precision groove-grinding process, and very resistant to wear and breakage as a result of induction hardening. The result is flawless, pro quality performance…cut after cut.

  • One-piece solid steel body; specially heat-treated and tempered for high strength.
  • Laser-cut for precision shape and fit-up.
  • Precision-ground grooves.
  • Rails are induction hardened and tempered.
  • Super-tough, high-tech alloy sprocket glides on precision Swiss bearings.
  • Nose cartridge side plates made of titanium alloy steel, hardened to CN40 specifications.
  • Nose self-locks over a solid steel web on the bar body. Held firmly together by three high- tensile rivets.
  • Superior resistance to wear.
  • Tougher and stronger nose plates can withstand greater abuse than those on competitive bars.
  • Easy nose replacement.
  • Uniform rails with a strong base radius.
  • Cutting performance enhanced.
  • Extremely tough and durable.
Part # LengthPitchDLGaugeMount
UHL13-58PJ 13".325"56.058"UHL
UHL13-58VQ
UHL13-63VQ
UHL13-58PA 13"3/8"50.058"UHL
UHL14-58PJ 14".325"60.058"UHL
UHL14-50PA
UHL14-58PA 14"3/8"54.058"UHL
UHL15-58PJ 15".325"64.058"UHL
SN15-63PJ 15".325"63.063"SN
UHL15-50PA 15"3/8"57.050"UHL
UHL15-58PA 15"3/8"56.058"UHL
HVP15-58PA
SN15-63PA 15"3/8"56.063"SN
HN16-50PJ
SN16-50PJ 16".325"67.050"SN
POX16-50PJ
UHLX16-58PJ 16".325"68.058"UHLX
UHL16-58PJ 16".325"66.058"UHL
SN16-63PJ 16".325"67.063"SN
JO16-50PA
HN16-50PA 16"3/8"60.050"HN
POX16-50PA 16"3/8"60.050"POX
M16-50PA
HVP16-50PA
MA16-50PA 16"3/8"60.050"MA
S16-50PA 16"3/8"62.050"S
UHLX16-58PA 16"3/8"60.058"UHLX
UHL16-58PA 16"3/8"59.058"UHL
P16-58PA 16"3/8"62.058"P
SN16-58PA
HVP16-58PA
HVX16-58PA
MA16-58PA
HN16-63PA
SN16-63PA 16"3/8"60.063"SN
S17-63VQ 17".404"60.063"S
DOL17-58PA 17"3/8"64.058"DOL
HVP17-58PA
HVX17-63PA
S17-63PA 17"3/8"66.063"S
UHLX18-50PJ
HVP18-58PJ
UHL18-58PJ 18".325"72.058"UHL
SN18-63PJ 18".325"74.063"SN
HVP18-50PA
SN18-50PA 18"3/8"66.050"SN
UHLX18-50PA
HN18-50PA 18"3/8"65.050"HN
JO18-58PA 18"3/8"68.058"JO
UHLX18-58PA 18"3/8"68.058"UHLX
P18-58PA 18"3/8"64.058"P
DS18-58PA
UHL18-58PA 18"3/8"64.058"UHL
PA18-58PA 18"3/8"64.058"PA
SN18-63PA 18"3/8"66.063"SN
HN18-63PA
UHL20-50PJ 20".325"80.050"UHL
MA20-50PJ
SN20-50PJ 20".325"81.050"SN
UHLX20-58PJ 20".325"78.058"UHLX
HV20-63VQ
HVP20-63VQ
SN20-63VQ 20".404"66.063"SN
EP20-63VQ
MA20-50PA 20"3/8"70.050"MA
HN20-50PA 20"3/8"70.050"HN
PO20-50PA 20"3/8"70.050"PO
JO20-50PA
UHLX20-50PA 20"3/8"72.050"UHLX
SN20-50PA 20"3/8"72.050"SN
HV20-58PA 20"3/8"72.058"HV
PA20-58PA 20"3/8"70.058"PA
UHL20-58PA 20"3/8"70.058"UHL
JOX20-58PA 20"3/8"70.058"JOX
JO20-58PA 20"3/8"72.058"JO
UHLX20-58PA 20"3/8"72.058"UHLX
HV20-63PA
HN20-63PA
JO20-63PA
SN20-63PA 20"3/8"72.063"SN
S21-50PJ
SLD21-63VQ
S21-63VQ 21".404"68.063"S
SLD21-50PA
DS21-58PA
S21-63PA 21"3/8"75.063"S
HV22-58PA 22"3/8"76.058"HV
JO22-58PA 22"3/8"76.058"JO
SN22-63PA
JO23-58PA
UHL24-50PJ
UHL24-58PJ 24".325"92.058"UHL
HVP24-58VQ
HV24-58VQ 24".404"76.058"HV
HV24-63VQ 24".404"76.063"HV
JO24-50PA
EX24-50PA 24"3/8"84.050"EX
MA24-50PA 24"3/8"81.050"MA
HN24-50PA 24"3/8"80.050"HN
UHL24-50PA 24"3/8"80.050"UHL
UHLX24-50PA
PX24-58PA 24"3/8"84.058"PX
P24-58PA 24"3/8"79.058"P
HV24-63PA
SN25-63VQ 25".404"78.063"SN
SLD25-63VQ 25".404"84.063"SLD
S25-63VQ 25".404"80.063"S
UHL25-58PA
SN25-63PA 25"3/8"84.063"SN
S25-63PA 25"3/8"88.063"S
HV28-63VQ 28".404"84.063"HV
HV28-50PA 28"3/8"93.050"HV
HVP28-50PA
HVP28-58PA
SN30-63VQ 30".404"88.063"SN
SLD30-63VQ 30".404"92.063"SLD
HV30-50PA 30"3/8"98.050"HV
HN30-50PA 30"3/8"98.050"HN
JO30-58PA 30"3/8"98.058"JO
HV30-58PA 30"3/8"98.058"HV
SLD30-63PA 30"3/8"100.063"SLD
HV32-63VQ 32".404"95.063"HV
SN32-63VQ 32".404"95.063"SN
HVP32-50PA
HV32-50PA 32"3/8"105.050"HV
HVP32-58PA
SN32-63PA 32"3/8"105.063"SN
HV32-63PA
SLD33-63VQ 33".404"100.063"SLD
SLD33-63PA 33"3/8"107.063"SLD
HVP34-50PA
HV36-63VQ 36".404"104.063"HV
SN36-63VQ 36".404"104.063"SN
SLD36-63VQ 36".404"104.063"SLD
HV36-50PA
SN36-50PA
HN36-50PA 36"3/8"117.050"HN
HNX36-50PA
HVP36-63PA
SLD42-63VQ 42".404"123.063"SLD
SN42-63VQ 42".404"124.063"SN
HVP42-58PA
SLD42-63PA
SN42-63PA