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A motocross rider in red gear navigates a dirt track at sunset. Another rider is visible in the background. Dust clouds surround them.
Unmatched Power and Durability for the Toughest Terrains

Off-Road Motorcycle Batteries

For off-road motorcycle riders seeking dependable performance, our Full Throttle Series batteries are the perfect match. These batteries offer high-cranking power, ensuring your motorcycle starts effortlessly, even in the most demanding environments. Engineered with exceptional reserve capacity, our batteries provide consistent energy output for long rides across rugged terrains. The high-compression construction is specifically designed to withstand intense vibrations, making them ideal for off-road conditions. Featuring a zero-spill, maintenance-free design, ensures durability and corrosion resistance, so you can focus on conquering trails and challenging landscapes with confidence and reliability.
Close-up of a dirt bike tire kicking up mud during a ride.
Close-up of a dirt bike tire kicking up mud during a ride.
Close-up of a red dirt bike wheel on sandy terrain, with another dirt bike and rider in the background.
Close-up of a red dirt bike wheel on sandy terrain, with another dirt bike and rider in the background.
A motocross rider on a dirt bike with the number 65 kicks up sand while riding on a dune.
A motocross rider on a dirt bike with the number 65 kicks up sand while riding on a dune.
A person wearing a helmet rides a dirt bike with the number 276, kicking up dust on a dirt track, while another rider follows closely.
A person wearing a helmet rides a dirt bike with the number 276, kicking up dust on a dirt track, while another rider follows closely.
Two motocross riders navigate rocky terrain and water. The front rider is airborne, wearing green, yellow, and red gear. The second rider follows, wearing blue and white gear. Trees surround them.
Two motocross riders navigate rocky terrain and water. The front rider is airborne, wearing green, yellow, and red gear. The second rider follows, wearing blue and white gear. Trees surround them.
Modesto Battery trusts Fullriver batteries for their customers' vehicles.

We have nothing but praise for this product.

Being a local distributor for this great brand for over a decade, we have nothing but praise for this product. Under the Fullriver umbrella line of batteries (EGL, DC, Full Throttle), the quality of support from Fullriver's team is unparalleled and lines up with our values. We are happy to stock such a premium product that gives our customers peace of mind.
Modesto Battery
Battery Lineup for

Off-Road Motorcycle Applications

Display Units In
IMPERIAL
METRIC
  • Full Throttle Starting Series

    FTSX-4L

    A black Full Throttle starting battery, model FTSX-4L, with specifications and a QR code on the label.
    Group
    BTX4L-BS, BTZ4V [JIS]
    Capacity
    3 Ah
    Dimms
    4.45 x 2.80 x 3.43 in
    Weight
    3.35 lbs
  • Full Throttle Starting Series

    FTSX-5L

    A gray Full Throttle starting battery labeled FTSX-5L with specifications including 5 volts and 65 amps.
    Group
    BTX5L-BS [JIS]
    Capacity
    5 Ah
    Dimms
    4.45 x 2.80 x 4.21 in
    Weight
    4.41 lbs
  • Full Throttle Starting Series

    FTSZ-5S

    Black Full Throttle starting battery with model number FTSZ-5S, featuring specs like 12 volts and 80 amps.
    Group
    BTX4L-BS, BTZ4V, BTZ5S [JIS]
    Capacity
    4 Ah
    Dimms
    4.45 x 2.80 x 3.43 in
    Weight
    4.15 lbs
  • Full Throttle Starting Series

    FTSX-5HL

    A black Full Throttle FTSX-5HL starting battery with red and white labels, featuring specs like 5Ah capacity and 80 amps.
    Group
    BTX5L-BS [JIS]
    Capacity
    5 Ah
    Dimms
    4.45 x 2.80 x 4.21 in
    Weight
    4.56 lbs
  • Full Throttle Starting Series

    FTSX-7A

    A black Full Throttle starting battery, model FTX-7A, with red and white label design, featuring a QR code and specifications for 12V, 7Ah, 105 amps.
    Group
    BTX7A-BS [JIS]
    Capacity
    7 Ah
    Dimms
    5.91 x 3.43 x 3.70 in
    Weight
    6.13 lbs
  • Full Throttle Starting Series

    FTSX-7L

    Black car battery labeled "Full Throttle Starting Battery FTSX-7L" with specifications of 7Ah capacity and 100 CCA.
    Group
    BTX7L-BS, BTZ8V [JIS]
    Capacity
    7 Ah
    Dimms
    4.45 x 2.80 x 5.16 in
    Weight
    5.58 lbs
  • Full Throttle Starting Series

    FTSZ-7S

    A black Full Throttle starting battery labeled FTSZ-7S, with specifications and QR code visible.
    Group
    BTZ7S, BTX5L-BS [JIS]
    Capacity
    6 Ah
    Dimms
    4.45 x 2.80 x 4.17 in
    Weight
    5.25 lbs
  • Full Throttle Starting Series

    FTSX-9

    A black Full Throttle battery labeled FTSX-9, displaying specifications and QR code on the front.
    Group
    BTX9-BS, BTR9-BS [JIS]
    Capacity
    8 Ah
    Dimms
    5.91 x 3.43 x 4.13 in
    Weight
    7.12 lbs
  • Full Throttle Starting Series

    FTSZ-10S

    Black car battery labeled "Full Throttle Starting Battery" with model number FTSZ-10S. Features include 12V, 8.6Ah, 160 CCA, and website URL on the side.
    Group
    BTZ10S [JIS]
    Capacity
    8.6 Ah
    Dimms
    5.91 x 3.43 x 3.70 in
    Weight
    7.14 lbs
  • Full Throttle Starting Series

    FTSX-12

    Black Full Throttle car battery, model FTSX-12, with red and white labeling and a QR code.
    Group
    BTX12-BS, 12N12A4A1 [JIS]
    Capacity
    11 Ah
    Dimms
    5.91 x 3.43 x 5.16 in
    Weight
    9.72 lbs
  • Full Throttle Starting Series

    FTSX-12A

    Black Full Throttle FTSX-12A starting battery with red and white label, featuring specifications and company logo.
    Group
    BT12A-BS, BTX9-BS, BTR9-BS [JIS]
    Capacity
    10 Ah
    Dimms
    5.91 x 3.43 x 4.13 in
    Weight
    8.36 lbs
  • Full Throttle Starting Series

    FTSX-12AA

    Black Full Throttle FTSX-12AA battery with red and white label detailing specifications like 12V and 190 amps.
    Group
    B12A-A, B12A-B [JIS]
    Capacity
    12 Ah
    Dimms
    5.39 x 2.99 x 6.30 in
    Weight
    10.01 lbs
  • Full Throttle Starting Series

    FTSX-12ALA

    A black Full Throttle starting battery, model FTSX-12ALA, with specifications including 12Ah capacity and 190 CCA displayed on the label.
    Group
    B12AL-A [JIS]
    Capacity
    12 Ah
    Dimms
    5.39 x 2.99 x 6.30 in
    Weight
    10.01 lbs
  • Full Throttle Starting Series

    FTSX-12N53B

    Black "Full Throttle" 12V starting battery with red and black labeling, showing model FTSX-12N53B, 70 amps, and 5Ah capacity.
    Group
    12N5-3B, B5L-B [JIS]
    Capacity
    5 Ah
    Dimms
    4.72 x 2.36 x 5.16 in
    Weight
    5.18 lbs
  • Full Throttle Starting Series

    FTSX-14

    Black Full Throttle starting battery, model FTSX-14, with specifications including 13Ah capacity and 200 CCA, shown on the label.
    Group
    BTX14-BS, BTX14, BT14B-4 [JIS]
    Capacity
    13 Ah
    Dimms
    5.91 x 3.43 x 5.75 in
    Weight
    11.47 lbs
  • Full Throttle Starting Series

    FTSZ-14S

    Black Full Throttle starting battery, model FTSZ-14S, featuring a QR code and branding details on the label.
    Group
    BTZ14S, BTZ12S [JIS]
    Capacity
    11.2 Ah
    Dimms
    5.91 x 3.43 x 4.37 in
    Weight
    8.86 lbs
  • Full Throttle Starting Series

    FTSZ-16H

    A Full Throttle starting battery, model FTSZ-16H, with specifications: 16Ah capacity, 240 amps, on a white background.
    Group
    BTZ16H; BTX14-BS; BTX14; BTX14H; BT14B-4 [JIS]
    Capacity
    16 Ah
    Dimms
    5.91 x 3.43 x 5.75 in
    Weight
    12.52 lbs
  • Full Throttle Series

    FT100

    A Full Throttle FT100 battery with black casing and red labels, showing specifications and 12 volts, 100 amp-hours capacity on the label.
    Group
    BTR9-BS [BCI]
    This model may also fit these group sizes:
    BTX9-BS, BTZ10S
    Capacity
    8 Ah
    Reserve Capacity @ 25A
    8 min
    Reserve Capacity @ 75A
    2.1 min
    Dimms
    5.43 x 3.39 x 4.02 in
    Weight
    6.61 lbs
  • Full Throttle Starting Series

    FTSX-4L

    A black Full Throttle starting battery, model FTSX-4L, with specifications and a QR code on the label.
    Group
    BTX4L-BS, BTZ4V [JIS]
    Capacity
    3 Ah
    Dimms
    113 x 71 x 87 mm
    Weight
    1.5 kg
  • Full Throttle Starting Series

    FTSX-5L

    A gray Full Throttle starting battery labeled FTSX-5L with specifications including 5 volts and 65 amps.
    Group
    BTX5L-BS [JIS]
    Capacity
    5 Ah
    Dimms
    113 x 71 x 107 mm
    Weight
    2.0 kg
  • Full Throttle Starting Series

    FTSZ-5S

    Black Full Throttle starting battery with model number FTSZ-5S, featuring specs like 12 volts and 80 amps.
    Group
    BTX4L-BS, BTZ4V, BTZ5S [JIS]
    Capacity
    4 Ah
    Dimms
    113 x 71 x 87 mm
    Weight
    1.9 kg
  • Full Throttle Starting Series

    FTSX-5HL

    A black Full Throttle FTSX-5HL starting battery with red and white labels, featuring specs like 5Ah capacity and 80 amps.
    Group
    BTX5L-BS [JIS]
    Capacity
    5 Ah
    Dimms
    113 x 71 x 107 mm
    Weight
    2.1 kg
  • Full Throttle Starting Series

    FTSX-7A

    A black Full Throttle starting battery, model FTX-7A, with red and white label design, featuring a QR code and specifications for 12V, 7Ah, 105 amps.
    Group
    BTX7A-BS [JIS]
    Capacity
    7 Ah
    Dimms
    150 x 87 x 94 mm
    Weight
    2.8 kg
  • Full Throttle Starting Series

    FTSX-7L

    Black car battery labeled "Full Throttle Starting Battery FTSX-7L" with specifications of 7Ah capacity and 100 CCA.
    Group
    BTX7L-BS, BTZ8V [JIS]
    Capacity
    7 Ah
    Dimms
    113 x 71 x 131 mm
    Weight
    2.5 kg
  • Full Throttle Starting Series

    FTSZ-7S

    A black Full Throttle starting battery labeled FTSZ-7S, with specifications and QR code visible.
    Group
    BTZ7S, BTX5L-BS [JIS]
    Capacity
    6 Ah
    Dimms
    113 x 71 x 106 mm
    Weight
    2.4 kg
  • Full Throttle Starting Series

    FTSX-9

    A black Full Throttle battery labeled FTSX-9, displaying specifications and QR code on the front.
    Group
    BTX9-BS, BTR9-BS [JIS]
    Capacity
    8 Ah
    Dimms
    150 x 87 x 105 mm
    Weight
    3.2 kg
  • Full Throttle Starting Series

    FTSZ-10S

    Black car battery labeled "Full Throttle Starting Battery" with model number FTSZ-10S. Features include 12V, 8.6Ah, 160 CCA, and website URL on the side.
    Group
    BTZ10S [JIS]
    Capacity
    8.6 Ah
    Dimms
    150 x 87 x 94 mm
    Weight
    3.2 kg
  • Full Throttle Starting Series

    FTSX-12

    Black Full Throttle car battery, model FTSX-12, with red and white labeling and a QR code.
    Group
    BTX12-BS, 12N12A4A1 [JIS]
    Capacity
    11 Ah
    Dimms
    150 x 87 x 131 mm
    Weight
    4.4 kg
  • Full Throttle Starting Series

    FTSX-12A

    Black Full Throttle FTSX-12A starting battery with red and white label, featuring specifications and company logo.
    Group
    BT12A-BS, BTX9-BS, BTR9-BS [JIS]
    Capacity
    10 Ah
    Dimms
    150 x 87 x 105 mm
    Weight
    3.8 kg
  • Full Throttle Starting Series

    FTSX-12AA

    Black Full Throttle FTSX-12AA battery with red and white label detailing specifications like 12V and 190 amps.
    Group
    B12A-A, B12A-B [JIS]
    Capacity
    12 Ah
    Dimms
    137 x 76 x 160 mm
    Weight
    4.5 kg
  • Full Throttle Starting Series

    FTSX-12ALA

    A black Full Throttle starting battery, model FTSX-12ALA, with specifications including 12Ah capacity and 190 CCA displayed on the label.
    Group
    B12AL-A [JIS]
    Capacity
    12 Ah
    Dimms
    137 x 76 x 160 mm
    Weight
    4.5 kg
  • Full Throttle Starting Series

    FTSX-12N53B

    Black "Full Throttle" 12V starting battery with red and black labeling, showing model FTSX-12N53B, 70 amps, and 5Ah capacity.
    Group
    12N5-3B, B5L-B [JIS]
    Capacity
    5 Ah
    Dimms
    120 x 60 x 131 mm
    Weight
    2.4 kg
  • Full Throttle Starting Series

    FTSX-14

    Black Full Throttle starting battery, model FTSX-14, with specifications including 13Ah capacity and 200 CCA, shown on the label.
    Group
    BTX14-BS, BTX14, BT14B-4 [JIS]
    Capacity
    13 Ah
    Dimms
    150 x 87 x 146 mm
    Weight
    5.2 kg
  • Full Throttle Starting Series

    FTSZ-14S

    Black Full Throttle starting battery, model FTSZ-14S, featuring a QR code and branding details on the label.
    Group
    BTZ14S, BTZ12S [JIS]
    Capacity
    11.2 Ah
    Dimms
    150 x 87 x 111 mm
    Weight
    4.0 kg
  • Full Throttle Starting Series

    FTSZ-16H

    A Full Throttle starting battery, model FTSZ-16H, with specifications: 16Ah capacity, 240 amps, on a white background.
    Group
    BTZ16H; BTX14-BS; BTX14; BTX14H; BT14B-4 [JIS]
    Capacity
    16 Ah
    Dimms
    150 x 87 x 146 mm
    Weight
    5.7 kg
  • Full Throttle Series

    FT100

    A Full Throttle FT100 battery with black casing and red labels, showing specifications and 12 volts, 100 amp-hours capacity on the label.
    Group
    BTR9-BS [BCI]
    This model may also fit these group sizes:
    BTX9-BS, BTZ10S
    Capacity
    8 Ah
    Reserve Capacity @ 25A
    8 min
    Reserve Capacity @ 75A
    2.1 min
    Dimms
    138 x 86 x 102 mm
    Weight
    3.0 kg

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