Fishing Rod Database
Megabass · Series ·2013

Arms Challenge

Limited-production premium Japanese bass rods on 7-axis ARMS blanks; ~100 pieces per model.

Megabass Arms Challenge is a limited-production, premium Japanese bass casting and spinning series built on the ARMS platform. Megabass's flagship ergonomic rod line. The series is made for dedicated Japanese bass anglers and collectors who want a functional, high-end tool instead of an off-the-shelf production rod. The ARMS Challenge was produced in extremely limited runs (approximately 100 pieces per model globally) and commands pricing around $999 USD per rod. Blanks use ARMS Hi-Impact Multiplex and Hi-Compression Coreplex graphite in a 7-axis layup, shared with Megabass's X7 flagship destroyer blanks.

Guides are Fuji SiC titanium frame. The reel seat is a stealth-style custom unit; the grip is Galaxy Maple natural wood (ergonomic, Ito-Head Locking System III). Custom handle options (left/right orientation, guide wrap colors) were available at the time of production. These are primarily casting rods with a few spinning variants. The models span a broad range from finesse spinning to big-bait casting. Eight models: five casting, three spinning. Lengths run 5'10"–7'6"; powers span light finesse (3–7 lb) through heavy casting (10–25 lb).

Lure weight floors are 1/32 oz on the lightest spinning model through 3/8 oz on heavy casting models. The 5'10" A5105X (GO-TEN) is the flagship throwing 1/4–1 oz on 10–25 lb; lighter spinning models (A6101XS, A6402XS) handle finesse applications down to 1/32 oz.

Series fingerprint
Power UL–MH Action — Length 5'10"–6'11" Lure 1/8oz–1oz Line 7lb–25lb

Shaded band: the spread of the lineup's 8 models, as percentile rank among same-type rods. Solid line = series median · dashed ring = catalog median.

Models
8 5 casting · 3 spinning
Length
5'10"–6'11" 1.80–2.10 m
Power
UL–MH 4 classes
Inferred
Line
3–25 lb
Lure
1/32–1 oz 0.9–28 g
Released
2013

Rods in this series

8 models
Save Model Length Power Price
A5105X 5'10" MHI Buy from Megabass
A6101XS 6'1" ULI Buy from Megabass
A6402XS 6'4" ULI Buy from Megabass
A6704X 6'7" MI Buy from Megabass
A6903X 6'9" MLI Buy from Megabass
A6104X 6'10" MI Buy from Megabass
A6103XS 6'10" MLI Buy from Megabass
A6115X 6'11" MHI Buy from Megabass
Specs as Megabass lists them, last verified . Report a spec error

I Power rating inferred from the lure / line-weight recommendation — not specified by the manufacturer.

Lure weight across the lineup, on one scale 0 to 1 oz
A6101XS A6402XS A6103XS A6903X A6104X A6704X A5105X A6115X

Model notes

3 of 8 models
A5105X Casting · 5'10" · MH

The GO-TEN model. Megabass's classic 5'10" baitcasting length optimized for pitching and skipping in tight cover. The 1/4–1 oz range covers jigs, Texas rigs, and mid-weight reaction baits. This length is a Megabass signature dimension across many series.

A6101XS Spinning · 6'1" · UL

Lightest model in the series at 3–7 lb and 1/32–1/8 oz. A finesse spinning tool for drop-shot, Ned rig, or micro jig presentations on clear water where subtlety matters. Rare to see this spec level combined with ARMS-tier construction.

A6115X Casting · 6'11" · MH

DIABLO TYPE-ARMS. 6'11" casting model for power presentations: swim jigs, mid-heavy swimbaits, or bladed jigs on 10–25 lb. The long-blank length in a casting rod is uncommon; provides leverage for long casts and working baits at distance.

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