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327

4-BOLT DECIMAL CHAIN RINGS

Rennen Decimal Gearing is a breakthrough in gearing technol-

ogy. We have developed Special Engineered Tooth profiles that

allow us to manipulate the size of a existing gearing to make it

slightly harder or easier depending on your needs for the track.

Changing your gearing by Fractions of a tooth is now possible.

Size Decimal .1

Decimal .2

Decimal .7

Decimal .8

Decimal .9

39

91-5145 391 91-5145 392 91-5145 397 91-5145 398 91-5145 399

40

91-5145 401 91-5145 402 91-5145 407 91-5145 408 91-5145 409

41

91-5145 411 91-5145 412 91-5145 417 91-5145 418 91-5145 419

42

91-5145 421 91-5145 422 91-5145 427 91-5145 428 91-5145 429

43

91-5145 431 91-5145 432 91-5145 437 91-5145 438 91-5145 439

44

91-5145 441 91-5145 442 91-5145 447 91-5145 448 91-5145 449

4-BOLT CHAINRING

Black

White

List

91-5175 36 91-5176 36 $39.95

91-5175 37 91-5176 37 39.95

91-5175 38 91-5176 38 39.95

91-5175 39 91-5176 39 39.95

91-5176 40 39.95

91-5175 41 91-5176 41 39.95

91-5175 42 91-5176 42 39.95

91-5175 43 91-5176 43 39.95

91-5175 44 91-5176 44 39.95

91-5175 45 91-5176 45 39.95

• CNC machined aluminum

• 5.5mm thick for strength and stiffness

• Works with 1/8” and 3/32” chains

• 4 bolt, 104mm BCD

WPS# List

91-518 $39.95

• For use with 3-Piece Race Chromoly Cranksets

and 19mm (.75") BB spindles

• 104bcd 4-bolt

• Made in the USA from CNC machined aluminum

SPIDER

SPEEDLINE 4-BOLT SPIDER

Color

WPS# List

Black

91-519K $59.95

White

91-519W 59.95

Red

91-519R 59.95

Blue

91-519B 59.95

Gold

91-519G 59.95

• For use with 48 spline x 19mm BB Spindles

• 104 bcd 4-Bolt

• Spline Drive Design for more precision and strength

CHAIN RINGS & PARTS

RACEWEAR

GLOVES

FOOTWEAR

HELMETS

HELMETACC.

EYEWEAR

PROTECTIVE

WEAR

CASUALWEAR

GEARBAGS

HYDRATION

ACCESSORIES

FRAMES&BIKES

FORKS

HEADSETS

STEMS

HANDLEBARS

GRIPS

SHIFTING

BRAKING

LIGHTING

TIRES&TUBES

WHEELS&RIMS

HUBS/CHAINS&

PARTS

CHAINRINGS&

PARTS

PEDALS

CRANKSETS

BOTTOM

BRACKETS

SEATS/POSTS&

CLAMPS

PLATES&

NUMBERS

SECURITY

CHEMICALS

TOOLS

PROMOTIONAL

INDEX

Phone: 1-800-999-3388 / 1-877-359-2946