Brompton Internal Gear Hub SRF-5(N) 5 X 2 (or more) Sprockets / 10 speed 28 holes kit (Sturmey Archer) cog set options, Hub Colour: Silver

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Brompton Internal Gear Hub SRF-5(N) 5 X 2 (or more) Sprockets / 10 speed 28 holes kit (Sturmey Archer) cog set options

SKU COSAB00102

£175.00

Hub Colour

Silver

Black

Cog Set

a1. 12-14-17t (3 PCs = 15 speed) (+£27.00)

a2. 12-15-17t (3 PCs = 15 speed) (+£27.00)

b. X3 Unibody (3 cogs = 15 speed) (+£57.00)

c. X4 Unibody (4 cogs = 20 speed) (+£77.00)

d. X5 Unibody (5 cogs = 25 speed) (+£108.00)

N/A

12 available

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Brompton Internal Gear Hub SRF-5(N) 5 X 2 (or more) Sprockets / 10 speed 28 holes kit (Sturmey Archer) cog set options

Product Details

Brand: Sturmey Archer

Item location: Taiwan

Status: In stock

Payment: Paypal, Credit cards

Ship to:: Worldwide

Sturmey Archer S-RF5 (N) 5x2 = 10 Speed / 28 holes

Internal gear hub 5 speed with two sprockets + accessories

Ideal for Brompton 2/6 speed (2x1 / 2x3) upgrade to 10 speed (2x5), including accessaries required (5 speed thumb shifter, cable ... please refer to photos. Rim and 2 speed shifter not included.)

Two Sprockets included 12T and 16T for Brompton

Axle Diameter - 13/32” Slotted
Over Locknut Dimension - 28h = 111mm
Axle Length - 148mm
Hub Shell Material - 6061 Aluminum

Gear Ratio

• Overall Range - 256%

• Gear 1 - 62.5% (-)37.5%

• Gear 2 - 75% (-)25% (Gear 1 + 20%)

• Gear 3 - 100% Direct Drive (Gear 2 + 33%)

• Gear 4 - 133.3% (+)33.3% (Gear 3 + 33%)

• Gear 5 - 160% (+)60% (Gear 4 + 20%)

Please note:

For other type brompton (1/3 speed) without 2 speed shifter and derailleur, you will need to buy extra 2 speed thumb shifter and derailleur upgrade kit to achieve 10 speed upgrade.
Brompton 1/3 speed can upgrade to 5 speed (1 sprocket) with this kit (rebuild rear wheel) directly and reserve the possibility for next phase 10 speed upgrade.
15 speed (3 sprockets) upgrade is possible, but will require special made external 3/4/5 speed sprockets mod kit (thinner) as the optional X series cog set below. Basic version is with standard 2 cogs.

Detail Specs :

Optional Expansion Cog Set

a. 3 PCs individual cogs (1. 12-14-17t or 2. 12-1517t). Compatible with most stock components. 5x3 = 15 speed.
b. X3 Unibody Cog Set (11-14-17t). Compatible with most stock components. 5x3 = 15 speed.
c. X4 Unibody Cog Set (11-13-17-21t). Derailleur system needs to be 3rd parties compatible. 5x4 = 20 speed.
d. X5 Unibody Cog SetGear (11-13-17-21-25t). Derailleur system needs to be 3rd parties compatible. 5x5 = 25 speed.

a. 3PCs (12-14-17t or 12-15-17t)

b. X3 unibody cog set

c. X4 unibody cog set

d. X5 unibody cog set

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